T类业余无线电台操作证书考试题库 (共415道)

T1A01. Which of the following is part of the Basis and Purpose of the Amateur Radio Service? 以下哪项是业余无线电服务的基础和目的的一部分？

1. Providing personal radio communications for as many citizens as possible 为尽可能多的公民提供个人无线电通信
2. Providing communications for international contesting 为国际比赛提供通信
3. Advancing skills in the technical and communication phases of the radio art 在无线电艺术的技术和传播阶段提高技能
4. All these choices are correct 所有这些选择都是正确的

T1A02. Which agency regulates and enforces the rules for the Amateur Radio Service in the United States? 哪个机构管理和执行美国业余无线电服务的规则？

1. ARRL 美国无线电中继联盟
2. Homeland Security 国土安全部
3. The FCC FCC
4. All these choices are correct 所有这些选择都是正确的

T1A03. What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service? FCC规则对业余无线电业务中使用语音字母进行电台识别有何规定？

1. It is required when transmitting emergency messages 发送紧急信息时需要
2. It is encouraged when using phone emissions 鼓励使用手机辐射
3. It is required when in contact with foreign stations 与国外电台接触时需要
4. All these choices are correct 所有这些选择都是正确的

T1A04. How do you receive official notification of your new license and call sign after passing the exam? 通过考试后，您如何收到新驾照和呼号的正式通知？

1. Email from the FCC with a link to download the license grant 来自美国联邦通信委员会的电子邮件，其中包含下载许可证授权的链接
2. USPS First-Class Mail from the FCC 来自FCC的USPS一级邮件
3. Email from the lead volunteer examiner 首席志愿者考官的电子邮件
4. USPS First-Class Mail from the lead volunteer examiner 来自首席志愿者考官的USPS一级邮件

T1A05. What proves that the FCC has issued an operator/primary license grant? 什么证明FCC已经颁发了运营商/主要许可证？

1. A printed copy of the certificate of successful completion of examination 考试合格证书复印件
2. An email notification from the NCVEC granting the license NCVEC授予许可的电子邮件通知
3. The license appears in the FCC ULS database 许可证出现在FCC ULS数据库中
4. All these choices are correct 所有这些选择都是正确的

T1A06. On which of the following HF frequencies can automatically controlled amateur propagation beacons be found? 在以下哪个高频频率上可以找到自动控制的业余传播信标？

1. Anywhere in the Technician portion of 10 meters 10米技术员部分的任何地方
2. Anywhere, if they are registered with the FCC 任何地方，只要他们在FCC注册
3. In a specific portion of each of the HF Technician bands 在每个HF技术员频段的特定部分
4. On ten meters, between 28.200 MHz and 28.300 MHz 在28.200 MHz和28.300 MHz之间的10米范围内

T1A07. What is the FCC Part 97 definition of a space station? FCC第97部分对空间站的定义是什么？

1. Any satellite orbiting Earth 任何绕地球运行的卫星
2. A manned satellite orbiting Earth 绕地球运行的载人卫星
3. An amateur station located more than 50 km above Earth's surface 位于地球表面上方50多公里处的业余空间站
4. An amateur station using amateur radio satellites for relay of signals 利用业余无线电卫星进行信号中继的业余电台

T1A08. Who recommends transmit/receive channels for repeater and auxiliary stations? 谁推荐中继器和辅助站的发射/接收信道？

1. A Frequency Spectrum Manager appointed by the FCC FCC任命的频谱管理员
2. A Volunteer Frequency Coordinator recognized by local amateurs 当地业余爱好者认可的志愿者频率协调员
3. An FCC Regional Field Office FCC地区现场办公室
4. The International Telecommunication Union 国际电信联盟

T1A09. Who selects a Frequency Coordinator? 谁选择频率协调员？

1. The FCC Office of Spectrum Management and Coordination Policy FCC频谱管理和协调政策办公室
2. The local chapter of the Office of National Council of Independent Frequency Coordinators 国家独立频率协调员委员会办公室地方分会
3. Amateur operators in a local or regional area whose stations are eligible to be repeater or auxiliary stations 本地或地区的业余运营商，其站点有资格成为中继站或辅助站
4. The FCC Regional Field Office FCC地区办事处

T1A10. Besides an FCC-issued amateur operator license, what is required to be the control operator of a Radio Amateur Civil Emergency Service (RACES) Station? 除了联邦通信委员会颁发的业余操作员执照外，业余无线电民用应急服务（RACES）站的控制操作员还需要什么？

1. A written recommendation by the local ARRL Emergency Coordinator 当地ARRL应急协调员的书面建议
2. Membership in the Amateur Radio Emergency Service (ARES) 业余无线电紧急服务（ARES）会员
3. Certification of current enrollment by a civil defense organization 民防组织对当前入学情况的证明
4. Nothing 无

T1A11. Which of the following is prohibited? 以下哪一项是被禁止的？

1. International communications on VHF bands and higher frequencies 甚高频段和更高频率的国际通信
2. Willful or malicious interference 故意或恶意干扰
3. Third-party traffic using digital modes 使用数字模式的第三方流量
4. All these choices are correct 所有这些选择都是正确的

T1B01. Which of the following frequency ranges are available for phone operation by Technician licensees? 以下哪个频率范围可供技术人员持牌人进行电话操作？

1. 28.050 MHz to 28.150 MHz 28.050 MHz至28.150 MHz
2. 28.100 MHz to 28.300 MHz 28.100 MHz至28.300 MHz
3. 28.300 MHz to 28.500 MHz 28.300 MHz至28.500 MHz
4. 28.500 MHz to 28.600 MHz 28.500兆赫至28.600兆赫

T1B02. Which of the following U.S. amateur radio operators are allowed to contact the International Space Station (ISS) on VHF bands? 以下哪位美国业余无线电操作员可以在甚高频频段与国际空间站（ISS）联系？

1. Only amateurs with a General class or higher license 只有持有普通类或更高执照的业余爱好者
2. Any amateur with a Technician class or higher license 任何持有技术员或更高执照的业余爱好者
3. Only amateurs with a General class or higher license, and NASA approval 只有持有普通类或更高执照的业余爱好者，以及美国国家航空航天局的批准
4. Any amateurs with a Technician class or higher license, and NASA approval 任何持有技术员或更高级别执照，并经美国国家航空航天局批准的业余爱好者

T1B03. Which frequency is in the 6-meter amateur band? 哪个频率在6米业余波段？

1. 49.00 MHz 49.00兆赫
2. 52.525 MHz 52.525兆赫
3. 28.50 MHz 28.50兆赫
4. 222.15 MHz 222.15兆赫

T1B04. Which amateur band includes 146.52 MHz? 哪个业余频段包括146.52 MHz？

1. 6 meters 6米
2. 20 meters 20米
3. 70 centimeters 70厘米
4. 2 meters 2米

T1B05. Which of the following bands include frequencies where Technicians are authorized to use digital modes such as FT8? 以下哪个频段包括技术人员有权使用FT8等数字模式的频率？

1. 10 meters 10米
2. 6 meters 6米
3. 2 meters 2米
4. All these choices are correct 所有这些选择都是正确的

T1B06. On which HF bands does a Technician class operator have phone privileges? 技师级操作员在哪些高频频段上具有电话权限？

1. None 没有一个
2. 10-meter band only 仅限10米波段
3. 80-meter, 40-meter, 15-meter, and 10-meter bands 80米、40米、15米和10米波段
4. 30-meter band only 仅限30米波段

T1B07. Which of the following VHF/UHF band segments are limited to CW only? 以下甚高频/超高频频带段中的哪一个仅限于CW？

1. 50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz 50.0 MHz至50.1 MHz和144.0 MHz至144.1 MHz
2. 219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz 219 MHz至220 MHz和420.0 MHz至420.1 MHz
3. 902.0 MHz to 902.1 MHz 902.0 MHz至902.1 MHz
4. All these choices are correct 所有这些选择都是正确的

T1B08. How are US amateurs restricted in segments of bands where the Amateur Radio Service is secondary? 美国业余爱好者如何被限制在业余无线电服务是次要的波段？

1. U.S. amateurs may find non-amateur stations in those segments, and must avoid interfering with them 美国业余爱好者可能会在这些路段找到非业余电台，必须避免干扰它们
2. U.S. amateurs must give foreign amateur stations priority in those segments 美国业余爱好者必须优先考虑外国业余电台
3. International communications are not permitted in those segments 这些领域不允许进行国际交流
4. Digital transmissions are not permitted in those segments 这些区段不允许进行数字传输

T1B09. Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band? 为什么你不应该把你的发射频率设置在业余波段或子波段的边缘？

1. To allow for calibration error in the transmitter frequency display 允许变送器频率显示出现校准错误
2. So that modulation sidebands do not extend beyond the band edge 这样调制边带就不会延伸到频带边缘之外
3. To allow for transmitter frequency drift 允许变送器频率漂移
4. All these choices are correct 所有这些选择都是正确的

T1B10. Where may SSB phone be used in amateur bands above 50 MHz? SSB手机在50 MHz以上的业余频段可以在哪里使用？

1. Only in sub-bands allocated to General class or higher licensees 仅在分配给普通级或更高级别许可证持有者的子波段中
2. Only on repeaters 仅在中继器上
3. In at least some segment of all these bands 至少在所有这些波段的某个片段中
4. On any band if the power is limited to 25 watts 在任何频段上，如果功率限制在25瓦

T1B11. What is the maximum peak envelope power output for Technician class operators in their HF band segments? 技术人员级操作员在其高频频段段的最大峰值包络功率输出是多少？

1. 200 watts 200瓦
2. 100 watts 100瓦
3. 50 watts 50瓦
4. 10 watts 10瓦

T1B12. Except for some specific restrictions, what is the maximum peak envelope power output for Technician class operators using frequencies above 30 MHz? 除某些特定限制外，使用频率高于30 MHz的技术人员级操作员的最大峰值包络功率输出是多少？

1. 50 watts 50瓦
2. 100 watts 100瓦
3. 500 watts 500瓦
4. 1500 watts 1500瓦

T1C01. For which classes of amateur radio licenses does the FCC currently issue new licenses? 美国联邦通信委员会目前为哪些类别的业余无线电执照颁发新的执照？

1. Novice, Technician, General, Amateur Extra 新手，技术员，普通，业余特级
2. Technician, Technician Plus, General, Amateur Extra 技术员、高级技术员、普通技术员、业余特级技术员
3. Novice, Technician Plus, General, Advanced 新手、技术员以上、普通、高级
4. Technician, General, Amateur Extra 技术员，普通，业余特级

T1C02. Who may select a desired call sign under the vanity call sign rules? 根据虚荣呼号规则，谁可以选择想要的呼号？

1. Only a licensed amateur with a General or Amateur Extra Class license 只有持有普通或业余特级执照的持照业余选手
2. Only a licensed amateur with an Amateur Extra Class license 只有持有业余特级驾照的持照业余选手
3. Only a licensed amateur who has been licensed continuously for more than 10 years 只有连续获得执照超过10年的持证业余选手
4. Any licensed amateur 任何有执照的业余爱好者

T1C03. What types of international communications are FCC-licensed amateur radio stations permitted to make? FCC许可的业余无线电台可以进行哪些类型的国际通信？

1. Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character 业余无线电服务目的附带的通信和个人性质的评论
2. Communications incidental to conducting business or remarks of a personal nature 开展业务附带的通信或个人性质的言论
3. Only communications incidental to contest exchanges; all other communications are prohibited 仅限于对交换提出异议的附带通信；禁止所有其他通信
4. Any communications that would be permitted by an international broadcast station 国际广播电台允许的任何通信

T1C04. What may happen if the FCC is unable to reach you by email? 如果联邦通信委员会无法通过电子邮件联系到您，会发生什么？

1. Fine and suspension of operator license 罚款和吊销操作员执照
2. Revocation of the station license or suspension of the operator license 吊销营业执照或吊销营业执照
3. Revocation of access to the license record in the FCC system 撤销对FCC系统中许可证记录的访问
4. Nothing; there is no such requirement 没有什么没有这样的要求

T1C05. Which of the following is a valid Group D call sign format for Technician class? 以下哪一项是技师级别的有效D组呼号格式？

1. KF1XXX kf1xx
2. KA1X
3. W1XX
4. All these choices are correct 所有这些选择都是正确的

T1C06. Which of the following statements is true about using your amateur radio license when operating aboard a vessel or craft in international waters? 关于在国际水域的船只上操作时使用业余无线电执照，以下哪项陈述是正确的？

1. Amateur operation is prohibited in international waters 国际水域禁止业余作业
2. You may only operate during maritime emergencies 您只能在海上紧急情况下操作
3. You need special FCC authorization for maritime mobile operation 海上移动运营需要特殊的FCC授权
4. You may operate from a US-documented vessel with the master's permission 经船长许可，您可以在美国注册的船只上操作

T1C07. How long before the expiration date may an amateur radio license renewal be requested? 业余无线电执照到期前多久可以申请续期？

1. 30 days 30天
2. 90 days 90天
3. 6 months 6个月
4. 1 year 1年

T1C08. What is the normal term for an FCC-issued amateur radio license? FCC颁发的业余无线电执照的有效期是多久？

1. Five years 五年
2. Eight years 八年
3. Ten years 十年
4. Life 生命

T1C09. What is the grace period for renewal if an amateur license expires? 如果业余执照到期，续期的宽限期是多少？

1. Two years 两年
2. Three years 三年
3. Five years 五年
4. Ten years 十年

T1C10. How soon after passing the examination for your first amateur radio license may you transmit on the amateur radio bands? 通过第一个业余无线电执照考试后多久，你可以在业余无线电波段上进行发射？

1. Immediately on receiving your Certificate of Successful Completion of Examination (CSCE) 收到您的考试合格证书后（CSCE）
2. As soon as your operator/station license grant appears on the ARRL website ARRL网站上显示您的运营商/加油站许可证后
3. As soon as your operator/station license grant appears in the FCC’s license database 一旦您的运营商/电台许可证授予出现在FCC的许可证数据库中
4. As soon as you receive your license in the mail from the FCC 一旦您收到FCC的邮件中的许可证

T1C11. If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands? 如果您的许可证已经过期，并且仍在允许的宽限期内，您可以继续在业余无线电波段上传输吗？

1. Yes, for up to two years 是的，最多两年
2. Yes, as soon as you apply for renewal 是的，只要你申请续期
3. Yes, for up to one year 是的，最长一年
4. No, you must wait until the license has been renewed 否，您必须等到续订许可证

T1D01. With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications? FCC许可的业余电台被禁止与哪些国家交换通信？

1. Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications 任何政府已通知国际电信联盟（ITU）反对此类通信的国家
2. Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications 任何政府已通知美国无线电中继联盟（ARRL）反对此类通信的国家
3. Any country banned from such communications by the International Amateur Radio Union (IARU) 任何被国际业余无线电联盟（IARU）禁止进行此类通信的国家
4. Any country banned from making such communications by the American Radio Relay League (ARRL) 任何被美国无线电中继联盟（ARRL）禁止进行此类通信的国家

T1D02. Under which of the following circumstances are one-way transmissions by an amateur station prohibited? 在下列哪种情况下，业余电台禁止单向传输？

1. Announcements of upcoming ham radio operating events 即将举行的业余无线电运营活动公告
2. Broadcasting 广播
3. International Morse Code Practice 国际莫尔斯电码实务
4. Telecommand or transmissions of telemetry 遥测遥控或传输

T1D03. When is it permissible to transmit messages encoded to obscure their meaning? 什么时候才允许传输被编码以掩盖其含义的信息？

1. Only when using a remote station during a contest 仅在比赛期间使用远程站时
2. Only when transmitting certain approved digital codes 仅当传输某些经批准的数字代码时
3. Only when transmitting control commands to space stations or model craft 仅当向空间站或模型飞行器发送控制命令时
4. Never 从不

T1D04. Under what conditions is an amateur station authorized to transmit music using a phone emission? 业余电台在什么条件下被授权使用手机发射来传输音乐？

1. When incidental to an authorized retransmission of manned spacecraft communications 当载人航天器通信的授权重发附带发生时
2. When the music produces no spurious emissions 当音乐不产生杂散发射时
3. When transmissions are limited to less than three minutes per hour 当传输限制在每小时三分钟以内时
4. When the music is transmitted above 1280 MHz 当音乐在1280 MHz以上传输时

T1D05. When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade? 业余无线电运营商何时可以使用他们的电台通知其他业余爱好者出售或交易设备的可用性？

1. Never 从不
2. When the equipment is not the personal property of either the station licensee, or the control operator, or their close relatives 当设备不是电站持牌人、控制操作员或其近亲的个人财产时
3. When no profit is made on the sale 当销售没有盈利时
4. When selling amateur radio equipment and not on a regular basis 当出售业余无线电设备而不是定期

T1D06. What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene? 对传播可能被视为不雅或淫秽的语言有哪些限制（如果有的话）？

1. The FCC maintains a list of words that are not permitted to be used on amateur frequencies FCC保留了一份不允许在业余频率上使用的单词列表
2. Any such language is prohibited 禁止使用任何此类语言
3. The International Telecommunications Union (ITU) maintains a list of words that are not permitted to be used on amateur frequencies 国际电信联盟（ITU）保留了一份不允许在业余频率上使用的单词列表
4. There is no such prohibition 没有这样的禁令

T1D07. Which of the following is an example of an auxiliary station? 以下哪一项是辅助站的示例？

1. A station sending one-way transmissions between a remote repeater receiver and the main repeater transmitter 在远程中继器接收器和主中继器发射器之间发送单向传输的站
2. A backup radio for emergency use in case the main station radio fails 主站无线电故障时紧急使用的备用无线电
3. A station used in the Military Auxiliary Radio System for linking government and amateur stations in a digital network 军用辅助无线电系统中用于在数字网络中连接政府和业余电台的电台
4. A second station utilized in multi-operator contest stations 第二站用于多操作员竞赛站

T1D08. In which of the following circumstances may the control operator of an amateur station receive compensation for operating that station? 在以下哪种情况下，业余电台的控制操作员可以因操作该电台而获得补偿？

1. When the communication is related to the sale of amateur equipment by the control operator's employer 当通信与控制操作员的雇主出售业余设备有关时
2. When the communication is a part of classroom instruction at an educational institution 当沟通成为教育机构课堂教学的一部分时
3. When the communication is made to obtain emergency information for a local broadcast station 当进行通信以获得本地广播电台的紧急信息时
4. All these choices are correct 所有这些选择都是正确的

T1D09. When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available? 假设没有其他手段，业余电台什么时候可以传输信息来支持广播、节目制作或新闻收集？

1. When such communications are directly related to the immediate safety of human life or protection of property 当此类通信直接涉及人的生命安全或财产保护时
2. When broadcasting communications to or from the space shuttle 向航天飞机广播通信时
3. Where non-commercial programming is gathered and supplied exclusively to the National Public Radio network 收集非商业节目并仅向国家公共广播网络提供
4. Never 从不

T1D10. How does the FCC define broadcasting for the Amateur Radio Service? FCC如何定义业余无线电服务的广播？

1. Two-way transmissions by amateur stations 业余电台双向传输
2. Any transmission made by the licensed station 由持牌电台进行的任何传输
3. Transmission of messages directed only to amateur operators 仅针对业余运营商的信息传输
4. Transmissions intended for reception by the general public 供公众接收的传输

T1D11. When may an amateur station transmit without identifying on the air? 业余电台什么时候可以在没有识别的情况下进行广播？

1. When the transmissions are of a brief nature to make station adjustments 当传输具有进行电台调整的短暂性质时
2. When the transmissions are unmodulated 当传输未调制时
3. When the transmitted power level is below 0.1 watt 当发射功率低于0.1瓦时
4. When transmitting signals to control model craft 向控制模型飞行器发送信号时

T1D12. Which of the following is required when making on-the-air test transmissions? 进行空中测试传输时，需要以下哪项？

1. Identify the transmitting station 识别发射站
2. Conduct tests only between 10 p.m. and 6 a.m. local time 仅在当地时间晚上10点至早上6点之间进行测试
3. Notify the FCC of the transmissions 通知FCC传输
4. All these choices are correct 所有这些选择都是正确的

T1E01. When may an amateur station transmit without a control operator? 业余电台什么时候可以在没有控制操作员的情况下进行发射？

1. When using automatic control, such as in the case of a repeater 使用自动控制时，例如在中继器的情况下
2. When the station licensee is away and another licensed amateur is using the station 当电台持牌人不在，而另一位持牌业余爱好者正在使用电台时
3. When the transmitting station is an auxiliary station 当发射站是辅助站时
4. Never 从不

T1E02. Who may be the control operator of a station communicating through an amateur satellite or space station? 谁可能是通过业余卫星或空间站进行通信的空间站的控制操作员？

1. Only an Amateur Extra Class operator 只有业余特级操作员
2. A General class or higher licensee with a satellite operator certification 具有卫星运营商证书的普通级或更高级别许可证持有人
3. Only an Amateur Extra Class operator who is also an AMSAT member 只有同时也是AMSAT成员的业余特级操作员
4. Any amateur allowed to transmit on the satellite uplink frequency 任何被允许在卫星上行链路频率上传输的业余爱好者

T1E03. Who must designate the station control operator? 谁必须指定电台控制操作员？

1. The station licensee 电台执照
2. The FCC FCC
3. The frequency coordinator 频率协调器
4. Any licensed operator 任何持牌运营商

T1E04. What determines the transmitting frequency privileges of an amateur station? 是什么决定了业余电台的发射频率特权？

1. The frequency authorized by the frequency coordinator 频率协调器授权的频率
2. The frequencies printed on the license grant 打印在许可证上的频率
3. The highest class of operator license held by anyone on the premises 场所内任何人持有的最高级别的操作员执照
4. The class of operator license held by the control operator 控制操作员持有的操作员执照类别

T1E05. What is an amateur station’s control point? 业余电台的控制点是什么？

1. The location of the station’s transmitting antenna 电台发射天线的位置
2. The location of the station’s transmitting apparatus 电台发射设备的位置
3. The location at which the control operator function is performed 执行控制操作员功能的位置
4. The mailing address of the station licensee 台站持牌人的邮寄地址

T1E06. When, other than during an emergency, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment? 除紧急情况外，技术员级持牌人何时可以担任业余特级频段电台的控制操作员？

1. At no time 任何时候都不可以
2. When designated as the control operator by an Amateur Extra Class licensee 当被业余特级持牌人指定为控制操作员时
3. As part of a multi-operator contest team 作为多运营商竞赛团队的一员
4. When using a club station whose trustee holds an Amateur Extra Class license 当使用受托人持有业余特级执照的俱乐部电台时

T1E07. When the control operator is not the station licensee, who is responsible for the proper operation of the station? 当操作员不是电台的所有人时，谁确保电台被正确使用？

1. All licensed amateurs who are present at the operation 所有有执照的业余爱好者都参加了手术
2. Only the station licensee 仅电台执照
3. Only the control operator 只有控制操作员
4. The control operator and the station licensee 控制操作员和台站持牌人

T1E08. Which of the following is an example of automatic control? 以下哪一项是自动控制的示例？

1. Repeater operation 中继器操作
2. Controlling a station over the internet 通过互联网控制电台
3. Using a computer or other device to send CW automatically 使用计算机或其他设备自动发送CW
4. Using a computer or other device to identify automatically 使用计算机或其他设备自动识别

T1E09. Which amateur stations may be remotely controlled? 哪些业余电台可以远程控制？

1. Only repeater stations 仅中继站
2. Only automatically controlled stations 仅限自动控制站
3. Only digital stations 仅数字电台
4. Any station 任何车站

T1E10. Which of the following is an example of remote control as defined in Part 97? 以下哪项是第97部分中定义的远程控制示例？

1. A software defined radio (SDR) 软件定义无线电（SDR）
2. Operating the station over the internet 通过互联网操作电台
3. Controlling a model aircraft, boat, or car by amateur radio 通过业余无线电控制模型飞机、船只或汽车
4. Earth-Moon-Earth (EME) communication 地月地（EME）通信

T1E11. What is a control operator as defined in Part 97? 第97部分中定义的控制操作员是什么？

1. The person speaking or otherwise communicating messages over an amateur station 通过业余电台讲话或以其他方式传达信息的人
2. The person who is the licensee of an amateur station 业余电台的持牌人
3. An amateur operator identified in the FCC database as responsible for transmissions and FCC rules compliance at a station license location 在FCC数据库中被确定为负责电台许可证位置的传输和FCC规则合规性的业余操作员
4. An amateur operator designated by the licensee of a station to be responsible for transmissions and FCC rules compliance at that station 由电台持牌人指定的业余操作员，负责该电台的传输和FCC规则合规性

T1F01. When must the station licensee make the station and the station records available for inspection? 车站持牌人必须在何时提供车站和车站记录以供检查？

1. At any time ten days after notification by the FCC of such an inspection FCC通知此类检查后10天内的任何时间
2. At any time upon request by an FCC representative 应FCC代表的要求随时
3. At any time after a written notification by the FCC of such inspection 在收到联邦通信委员会关于此类检查的书面通知后的任何时间
4. Only when presented with a valid warrant by an FCC official or government agent 只有当FCC官员或政府代理人出示有效的搜查令时

T1F02. How often must you identify with your FCC-assigned call sign when using tactical call signs such as “Race Headquarters”? 使用战术呼号（如“比赛总部”）时，您必须多久识别一次FCC指定的呼号？

1. Never, the tactical call is sufficient 从来没有，战术呼叫就足够了
2. Once every hour 每小时一次
3. At least every 10 minutes during and at the end of a communication 在通信期间和结束时至少每10分钟一次
4. At the end of every transmission 每次传输结束时

T1F03. When are you required to transmit your assigned call sign? 您需要在什么时候传送指定的呼号？

1. At the beginning of each contact, and every 10 minutes thereafter 每次接触开始时，此后每10分钟
2. At least once during each transmission 每次传输期间至少一次
3. At least every 15 minutes during and at the end of a communication 在通信期间和通信结束时，至少每15分钟一次
4. At least every 10 minutes during and at the end of a communication 在通信期间和通信结束时，至少每10分钟一次

T1F04. What language must you use for identification when using a phone emission? 使用手机发射时，您必须使用哪种语言进行身份识别？

1. Any language recognized by the United Nations 联合国承认的任何语言
2. Any language recognized by the ITU 国际电联认可的任何语言
3. English 英语
4. English, French, or Spanish 英语、法语或西班牙语

T1F05. What method of call sign identification is required for a station transmitting phone signals? 发射电话信号的电台需要用什么方法识别呼号？

1. Send the call sign followed by the indicator RPT 发送呼号，然后是指示RPT
2. Send the call sign using a CW or phone emission 使用CW或电话发射发送呼号
3. Send the call sign followed by the indicator R 发送呼号后接指示灯R
4. Send the call sign using only a phone emission 仅使用电话发射发送呼号

T1F06. Which of the following self-assigned indicators are acceptable when using a phone transmission? 当使用电话传输时，以下哪种自行分配的指示灯是可以接受的？

1. KL7CC stroke W3 KL7CC冲程W3
2. KL7CC slant W3 KL7CC斜面W3
3. KL7CC slash W3 KL7CC斜线W3
4. All these choices are correct 所有这些选择都是正确的

T1F07. Which of the following restrictions apply when a non-licensed person speaks to a foreign amateur radio station via a station under the control of an FCC-licensed amateur radio operator? 当非持证人员通过联邦通信委员会持证业余无线电运营商控制的电台与外国业余无线电台通话时，以下哪些限制适用？

1. The person must be a U.S. citizen 此人必须是美国公民
2. The foreign station must be in a country with which the U.S. has a third-party agreement 外国电台必须位于与美国有第三方协议的国家
3. The licensed control operator must do the station identification 持有执照的控制操作员必须进行站识别
4. All these choices are correct 所有这些选择都是正确的

T1F08. What is the definition of third-party communications? 第三方通信的定义是什么？

1. A message from a control operator to another amateur station control operator on behalf of another person 一个控制操作员代表另一个人向另一个业余站控制操作员发送的信息
2. Amateur radio communications where three stations are in communications with one another 三个电台相互通信的业余无线电通信
3. Operation when the transmitting equipment is licensed to a person other than the control operator 传输设备许可给控制操作员以外的人员时的操作
4. Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments 临时授权未经许可的人在业余波段进行技术实验

T1F09. What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels? 什么类型的业余电台在不同的一个或多个频道上同时重传另一个业余电台的信号？

1. Beacon station 信标站
2. Remote control station 遥控站
3. Repeater station 中继站
4. Message forwarding station 消息转发站

T1F10. Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules? 如果中继器无意中转发了违反FCC规则的通信，谁负责？

1. The control operator of the originating station 始发站的控制操作员
2. The control operator of the repeater 中继器的控制操作员
3. The owner of the repeater 中继器的所有者
4. Both the originating station and the repeater owner 始发站和中继器所有者

T1F11. Which of the following is a requirement for the issuance of a club station license grant? 以下哪项是颁发俱乐部电台许可证的要求？

1. The trustee must have an Amateur Extra Class operator license grant 受托人必须获得业余特级操作员许可证
2. The club must have at least four members 俱乐部必须至少有四名成员
3. The club must be registered with the American Radio Relay League (ARRL) 俱乐部必须在美国无线电中继联盟（ARRL）注册
4. All these choices are correct 所有这些选择都是正确的

T2A01. What is a common repeater frequency offset in the 2-meter band? 2米频段中常见的中继器频率偏移是什么？

1. Plus or minus 5 MHz 正负5 MHz
2. Plus or minus 600 kHz 正负600 kHz
3. Plus or minus 500 kHz 正负500 kHz
4. Plus or minus 1 MHz 正负1 MHz

T2A02. What is the national calling frequency for FM simplex operations in the 2-meter band? 2米频段内FM单工操作的国家呼叫频率是多少？

1. 146.520 MHz 146.520兆赫
2. 145.000 MHz 145.000兆赫
3. 432.100 MHz 432.100兆赫
4. 446.000 MHz 446.000兆赫

T2A03. What is a common repeater frequency offset in the 70-centimeter band? 70厘米波段常见的中继器频率偏移是什么？

1. Plus or minus 5 MHz 正负5 MHz
2. Plus or minus 600 kHz 正负600 kHz
3. Plus or minus 500 kHz 正负500 kHz
4. Plus or minus 1 MHz 正负1 MHz

T2A04. What is an appropriate way to call another station on a repeater if you know the other station's call sign? 如果你知道另一个电台的呼号，用中继器呼叫另一个台的合适方式是什么？

1. Say "break, break," then the other station’s call sign, followed by your call sign 说“休息，休息”，然后是对方的呼号，接着是你的呼号
2. Say the station's call sign, then identify with your call sign 说出电台的呼号，然后用呼号识别
3. Say "CQ" three times, then the other station's call sign, followed by your call sign 说“CQ”三次，然后是对方电台的呼号，接着是你的呼号
4. Wait for the station to call CQ, then answer with your call sign 等待车站呼叫CQ，然后用您的呼号接听

T2A05. How should you respond to a station calling CQ? 您应该如何回应呼叫CQ的电台？

1. Transmit "CQ" followed by the other station’s call sign 发送“CQ”，然后发送其他电台的呼号
2. Transmit your call sign followed by the other station’s call sign 发送您的呼号，然后发送其他电台的呼号
3. Transmit the other station’s call sign followed by your call sign 发送另一个电台的呼号，然后发送您的呼号
4. Transmit a signal report followed by your call sign 发送信号报告，然后发送呼号

T2A06. What is an effective way to seek a call from any phone station when not using a repeater? 在不使用中继器的情况下，从任何电话站寻求呼叫的有效方法是什么？

1. Sign your call sign once, followed by the words “listening for a call;” if there is no answer, change the frequency and repeat 在呼号上签名一次，然后写上“接听电话”；如果没有人接听，改变频率并重复
2. Say “QTC,” followed by “this is” and your call sign; if there is no answer, change the frequency and repeat 说“QTC”，然后说“this is”和你的呼号；如果没有答案，请更改频率并重复
3. Transmit an unmodulated carrier for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen; repeat as necessary 发送一个未调制的载波约10秒，然后输入“this is”和您的呼号，然后暂停收听；必要时重复
4. Repeat “CQ” a few times, followed by “this is,” and your call sign, then pause to listen; repeat as necessary 重复“CQ”几次，然后是“this is”和你的呼号，然后停下来听；必要时重复

T2A07. What does the term "repeater offset" mean? 术语“中继器偏移”是什么意思？

1. The difference between a repeater’s transmit and receive frequencies 中继器的发射频率和接收频率之间的差异
2. The repeater has a time delay to prevent interference 中继器有延时以防止干扰
3. The approximately half-second delay to allow for the “squelch tail” to be removed 大约半秒的延迟，以消除“静噪尾部”
4. The fee charged by the repeater owner or club to provide for maintenance 中继器所有者或俱乐部为提供维护而收取的费用

T2A08. What is the meaning of the procedural signal “CQ”? 程序信号“CQ”的含义是什么？

1. A shortened form of the term “Contest QSO” “竞赛QSO”一词的缩写形式
2. “Communication Quality,” used to indicate transmitted audio clarity “通信质量”，用于表示传输的音频清晰度
3. Only the called station should transmit 只有被叫站应该发送
4. Calling any station 呼叫任何电台

T2A09. Which of the following is a customary way to indicate a station is listening on a repeater and looking for a contact? 以下哪一项是表示电台正在收听中继器并寻找联系人的惯常方式？

1. “CQ CQ” followed by the repeater’s call sign “CQ CQ”后接中继器的呼号
2. The station’s call sign followed by the word “listening” 电台的呼号后面跟着“收听”一词
3. The repeater’s call sign followed by the station’s call sign 中继器的呼号后面跟着电台的呼号
4. “QSY” followed by your call sign “QSY”后接呼号

T2A10. What is a band plan, beyond the privileges established by the FCC? 除了联邦通信委员会规定的特权之外，什么是波段计划？

1. A voluntary guideline for using different modes or activities within an amateur band 在业余波段中使用不同模式或活动的自愿指南
2. A list of operating schedules 运行时间表列表
3. A list of available net frequencies 可用网络频率列表
4. A plan devised by a club to indicate frequency band usage 俱乐部设计的用于指示频带使用情况的计划

T2A11. What term describes an amateur station that is transmitting and receiving on the same frequency? 哪个术语描述在同一频率上发送和接收的业余电台？

1. Full duplex 全双工
2. Diplex 双工器
3. Simplex 单纯形
4. Multiplex 多路复用

T2A12. What should you do before calling CQ? 打电话给CQ之前你应该怎么做？

1. Listen first to be sure that no one else is using the frequency 先听，确保没有其他人在使用该频率
2. Ask if the frequency is in use 询问频率是否在使用中
3. Make sure you are authorized to use that frequency 确保您有权使用该频率
4. All these choices are correct 所有这些选择都是正确的

T2B01. What is the purpose of the reverse function on a VHF/UHF transceiver? VHF/UHF收发器上反向功能的目的是什么？

1. To reduce power output 降低功率输出
2. To increase power output 增加功率输出
3. To listen on a repeater’s input frequency 收听中继器的输入频率
4. To listen on a repeater’s output frequency 收听中继器的输出频率

T2B02. What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver? 什么术语描述了使用与正常语音音频一起传输的亚音频来打开接收器的静噪？

1. Carrier squelch 载波静噪
2. Tone burst 音调突发
3. DTMF 双音多频
4. CTCSS

T2B03. Which of the following describes a linked repeater network? 以下哪项描述了链接中继器网络？

1. A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network 一种中继器网络，其中一个中继器接收的信号由网络中的所有中继器发送
2. A single repeater with more than one receiver 具有多个接收器的单个中继器
3. Multiple repeaters with the same control operator 具有相同控制操作员的多个中继器
4. A system of repeaters linked by APRS 由APRS连接的中继器系统

T2B04. Which of the following could be the reason you are unable to access a repeater whose output you can hear? 以下哪一项可能是您无法访问其输出可以听到的中继器的原因？

1. Improper transceiver offset 收发器偏移不正确
2. You are using the wrong CTCSS tone 您使用了错误的CTCSS音调
3. You are using the wrong DCS code 您使用了错误的DCS代码
4. All these choices are correct 所有这些选择都是正确的

T2B05. Which of the following would cause your FM transmission audio to drop out on voice peaks? 以下哪一项会导致您的FM传输音频在语音峰值时丢失？

1. Your repeater offset is inverted 您的中继器偏移量已反转
2. Your FM deviation is too low 您的FM偏差太小
3. You are talking too loudly 你说话太大声了
4. Your transmit power is too high 你的发射功率太高

T2B06. What type of signaling to a repeater uses two simultaneous audio tones? 哪种类型的中继器信号使用两个同时的音频音调？

1. DTMF 双音多频
2. CTCSS
3. GMRS 一般机动无线电勤务
4. D-STAR D星

T2B07. How can you join a digital repeater’s “talkgroup”? 如何加入数字中继器的“通话组”？

1. Register with the local Frequency Coordinator 向当地频率协调员注册
2. Register with the digital repeater control operator 向数字中继器控制操作员注册
3. Program your radio with the group’s ID or code 使用小组的ID或代码对收音机进行编程
4. Program your radio with the DTMF tone used by the talkgroup 用通话组使用的DTMF音调对收音机进行编程

T2B08. Which of the following applies when two stations transmitting on the same frequency interfere with each other? 当两个在同一频率上传输的电台相互干扰时，以下哪一项适用？

1. The stations should negotiate continued use of the frequency 电台应协商继续使用频率
2. Both stations should choose another frequency to avoid conflict 两个电台应选择另一个频率以避免冲突
3. Whichever station was on the frequency first has preemptive rights to the frequency 首先在该频率上的哪个电台对该频率拥有优先权
4. Use subaudible tones so both stations can share the frequency 使用亚音频音调，使两个电台可以共享频率

T2B09. Why are simplex channels designated in the VHF/UHF band plans? 为什么甚高频/超高频频带计划中指定单工信道？

1. So stations within range of each other can communicate without tying up a repeater 因此，彼此范围内的站点可以在不占用中继器的情况下进行通信
2. For contest operation 用于竞赛操作
3. For working DX only 仅用于工作DX
4. So stations with simple transmitters can access the repeater without automated offset 因此，具有简单发射机的电台可以在没有自动偏移的情况下接入中继器

T2B10. Which Q signal indicates that you are receiving interference from other stations? 哪个Q信号表示您正在接收来自其他电台的干扰？

1. QRM 你受他台干扰么? 我受他台干扰.
2. QRN 大气干扰严重么? 大气干扰严重.
3. QTH 所在位置
4. QSB 质量体系基础

T2B11. Which Q signal indicates that you are changing frequency? 哪个Q信号表示您正在改变频率？

1. QRU 你有事吗？ 无事
2. QSY 要我改用其他频率拍发吗？请改用...KHz/MHz拍发
3. QSL 你确认收妥／QSL卡片吗？ 我确认收妥／QSL卡片
4. QRZ 谁在呼叫我？ ...正在...KHz/MHz上呼叫你

T2B12. What is the digital color code used on DMR repeater systems? DMR中继器系统上使用的数字颜色代码是什么？

1. An access code which must be programmed into a DMR transmitter to access a specific repeater 必须编程到DMR发射机中才能访问特定中继器的访问代码
2. A code which automatically programs the repeater offset to a frequency chosen by the user 一种代码，自动将中继器偏移编程到用户选择的频率
3. A code which identifies the specific CODEC being used so that the repeater can properly decode the audio 一种代码，用于标识正在使用的特定编解码器，以便中继器能够正确解码音频
4. A code transmitted by the repeater to indicate health and status of the equipment 中继器传输的代码，用于指示设备的健康状况和状态

T2B13. What is the purpose of a squelch function? 静噪功能的用途是什么？

1. Reduce a CW transmitter's key clicks 减少CW发射机的按键点击
2. Mute the receiver audio when a signal is not present 当没有信号时，将接收器音频静音
3. Eliminate parasitic oscillations in an RF amplifier 消除射频放大器中的寄生振荡
4. Reduce interference from impulse noise 减少脉冲噪声的干扰

T2B14. Which of the following is a “talkgroup”? 以下哪一项是“谈话小组”？

1. A group of amateur radio operators who share email on a specific amateur radio topic 一群业余无线电操作员就特定的业余无线电话题分享电子邮件
2. An identifier used by DMR to organize radio traffic so that those who want to hear the group aren’t bothered by other radio traffic DMR用来组织无线电通信的标识符，这样那些想听到该组的人就不会被其他无线电通信打扰
3. The members of a net organized for amateur radio operators with a specific common interest 为具有特定共同兴趣的业余无线电操作员组织的网络成员
4. A method of automatically alerting all group members to the frequency where any member is transmitting 一种自动提醒所有组成员任何成员正在传输的频率的方法

T2C01. When do the FCC Part 97 Amateur Radio Service rules NOT apply to the operation of an amateur station? FCC第97部分业余无线电服务规则何时不适用于业余电台的运营？

1. When operating under RACES rules 在比赛规则下操作时
2. When operating under FEMA rules 在联邦紧急事务管理局规则下运作时
3. When operating under ARES rules 在ARES规则下操作时
4. FCC rules always apply FCC规则始终适用

T2C02. Which of the following are typical duties of a Net Control Station? 以下哪项是网络控制站的典型职责？

1. Choose the regular net meeting time and frequency 选择定期网络会议的时间和频率
2. Ensure that all stations checking into the net are properly licensed for operation on the net frequency 确保所有接入网络的电台都获得了在网络频率上运行的适当许可
3. Call the net to order and direct communications between stations checking in 呼叫网络订购并指导报到站之间的通信
4. All these choices are correct 所有这些选择都是正确的

T2C03. What technique is used to ensure that voice messages containing unusual words are received correctly? 使用什么技术来确保包含异常单词的语音消息被正确接收？

1. Send the words by voice and Morse code 通过语音和莫尔斯电码发送单词
2. Use the Q-code “QSR” to ask the receiving station to repeat the words back 使用Q码“QSR”要求接收站重复单词
3. Spell the words using a standard phonetic alphabet 使用标准拼音拼写单词
4. All these choices are correct 所有这些选择都是正确的

T2C04. What is RACES? 什么是种族？

1. An emergency organization combining amateur radio and citizens band operators and frequencies 一个由业余无线电和市民波段操作员和频率组成的应急组织
2. An international radio experimentation society 国际无线电实验学会
3. A radio contest held in a short period, sometimes called a “sprint” 短时间内举行的广播比赛，有时被称为“短跑”
4. An FCC Part 97 amateur radio service for civil defense communications during national emergencies 美国联邦通信委员会第97部分国家紧急情况下用于民防通信的业余无线电服务

T2C05. What does the term “traffic” refer to in net operation? “流量”一词在网络运营中指的是什么？

1. Formal messages exchanged by net stations 网络站点交换的正式消息
2. The number of stations checking in and out of a net 入网和出网的站点数量
3. Operation by mobile or portable stations 移动站或便携式站的操作
4. A count of the number of activations of the net each month 每月网络激活次数的计数

T2C06. What is the Amateur Radio Emergency Service (ARES)? 什么是业余无线电应急服务（ARES）？

1. A group of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service 一群有执照的业余爱好者，他们自愿注册了在公共服务中履行通信职责的资格和设备
2. A group of licensed amateurs who are members of the military and who voluntarily agreed to provide message handling services in the case of an emergency 一群持有执照的业余军人，他们自愿同意在紧急情况下提供信息处理服务
3. A training program that provides licensing courses for those interested in obtaining an amateur license to use during emergencies 一种培训计划，为那些有兴趣获得业余许可证的人提供许可证课程，以便在紧急情况下使用
4. A training program that certifies amateur operators for membership in the Radio Amateur Civil Emergency Service 一个培训项目，认证业余操作员加入业余无线电民用应急服务

T2C07. Which of the following is standard practice when you participate in a net? 以下哪项是您参加网络活动时的标准做法？

1. When first responding to the net control station, transmit your call sign, name, and address as in the FCC database 当第一次响应网络控制站时，按照FCC数据库中的方式发送您的呼号、姓名和地址
2. Record the time of each of your transmissions 记录每次传输的时间
3. Unless you are reporting an emergency, transmit only when directed by the net control station 除非您正在报告紧急情况，只有在网络控制站的指示下才能发送
4. All these choices are correct 所有这些选择都是正确的

T2C08. Which of the following relays messages using email addresses based on amateur callsigns? 以下哪一项使用基于业余呼号的电子邮件地址中继消息？

1. Winlink 无线链路
2. FT8 英尺8
3. PSK31
4. AMTOR

T2C09. Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class? 业余站控操作员是否被允许在其许可级别的频率权限之外进行操作？

1. No 不
2. Yes, but only when part of a FEMA emergency plan 是的，但仅当FEMA应急计划的一部分
3. Yes, but only when part of a RACES emergency plan 是的，但仅当RACES应急计划的一部分
4. Yes, but only in situations involving the immediate safety of human life or protection of property 是的，但仅限于涉及人身安全或财产保护的情况

T2C10. What information is contained in the preamble of a formal traffic message? 正式交通信息的序言中包含哪些信息？

1. The email address of the originating station 始发站的电子邮件地址
2. The address of the intended recipient 预定收件人的地址
3. The telephone number of the addressee 收件人的电话号码
4. Information needed to track the message 跟踪邮件所需的信息

T2C11. What is meant by “check” in a radiogram header? 无线电图像标题中的“检查”是什么意思？

1. The number of words or word equivalents in the text portion of the message 消息文本部分中的单词数或等效单词数
2. The call sign of the originating station 始发站的呼号
3. A list of stations that have relayed the message 已中继消息的电台列表
4. A box on the message form that indicates that the message was received and/or relayed 消息表单上的一个框，指示消息已被接收和/或中继

T2C12. Which of the following requires certification by a civil defense agency? 以下哪一项需要民防机构的认证？

1. ARES 阿瑞斯
2. RACES 比赛
3. MARS 火星
4. SKYWARN 天空警告

T3A01. Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet? 为什么当天线只移动几英尺时，VHF信号强度有时会有很大的变化？

1. The signal path encounters different concentrations of water vapor 信号路径遇到不同浓度的水蒸气
2. VHF ionospheric propagation is very sensitive to path length 甚高频电离层传播对路径长度非常敏感
3. Multipath propagation cancels or reinforces signals 多径传播消除或增强信号
4. The Doppler effect causes slight frequency shifts which result in changes in signal strength 多普勒效应导致轻微的频率偏移，从而导致信号强度的变化

T3A02. How does vegetation affect UHF and microwave signals? 植被如何影响超高频和微波信号？

1. Causes knife-edge diffraction, distorting voice peaks 导致刀刃衍射，扭曲声音峰值
2. Absorbs signals, leading to poor reception of weak signals 吸收信号，导致弱信号接收不良
3. Amplifies signals, improving reception of weak signals 放大信号，改善弱信号的接收
4. Has no effect 没有效果

T3A03. What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands? 甚高频和超高频波段的长距离CW和SSB触点通常使用什么天线极化？

1. Right-hand circular 右侧圆形
2. Left-hand circular 左侧圆形
3. Horizontal 水平的
4. Vertical 竖的

T3A04. What is the effect of antenna cross-polarization over a line-of-sight VHF or UHF path? 天线交叉极化在视距VHF或UHF路径上的影响是什么？

1. Modulation sidebands might become inverted 调制边带可能会反转
2. Received signal strength is reduced 接收信号强度降低
3. Signals have an echo effect 信号具有回声效应
4. Nothing significant will happen 不会发生任何重大事件

T3A05. When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path? 当使用定向天线时，如果建筑物或障碍物阻挡了直接的视线路径，您的电台如何能够与远程中继器通信？

1. Change from vertical to horizontal polarization 从垂直极化变为水平极化
2. Try to find a path that reflects signals to the repeater 尝试找到一条将信号反射到中继器的路径
3. Try the long path 试试长路
4. Increase the antenna SWR 增加天线SWR

T3A06. What is the meaning of the term “picket fencing”? “尖桩围栏”一词的含义是什么？

1. Alternating transmissions during a net operation 网络操作期间的交替传输
2. Rapid flutter on mobile signals due to multipath propagation 多径传播引起的移动信号快速颤动
3. A type of ground system used with vertical antennas 一种与垂直天线一起使用的地面系统
4. Interference from cable TV in the form of carriers at fixed intervals across the band 有线电视在频带内以固定间隔的载波形式产生的干扰

T3A07. What weather condition might decrease range at microwave frequencies? 什么天气条件可能会降低微波频率下的射程？

1. High winds 大风
2. Low barometric pressure 低气压
3. Precipitation 降水
4. Colder temperatures 冷却器温度

T3A08. What is a likely cause of irregular fading of signals propagated by the ionosphere? 电离层传播的信号不规则衰落的可能原因是什么？

1. Frequency shift due to Faraday rotation 法拉第旋转引起的频率偏移
2. Interference from thunderstorms 雷暴干扰
3. Intermodulation distortion 互调失真
4. Random combining of signals arriving via different paths 通过不同路径到达的信号的随机组合

T3A09. Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized? 以下哪一项是由电离层传播的信号是椭圆偏振的事实引起的？

1. Digital modes are unusable 数字模式不可用
2. Either vertically or horizontally polarized antennas may be used for transmission or reception 垂直或水平极化天线可用于发射或接收
3. FM voice is unusable 调频语音不可用
4. Both the transmitting and receiving antennas must be of the same polarization 发射天线和接收天线必须具有相同的极化

T3A10. What effect does multi-path propagation have on data transmissions? 多路径传播对数据传输有什么影响？

1. Transmission rates must be increased by a factor equal to the number of separate paths observed 传输速率必须增加一个等于观察到的独立路径数量的因子
2. Transmission rates must be decreased by a factor equal to the number of separate paths observed 传输速率必须降低一个等于观察到的独立路径数量的因子
3. No significant changes will occur if the signals are transmitted using FM 如果使用FM传输信号，则不会发生显著变化
4. Error rates are likely to increase 错误率可能会增加

T3A11. Which region of the atmosphere can reflect HF radio waves? 大气的哪个区域可以反射高频无线电波？

1. The stratosphere 平流层
2. The troposphere 对流层
3. The ionosphere 电离层
4. The electrosphere 电圈

T3A12. What effect does fog or rain have on 10-meter and 6-meter band signals? 雾或雨对10米和6米波段的信号有什么影响？

1. Absorption 吸收
2. Little effect 影响不大
3. Deflection 挠度
4. Increased range 范围扩大

T3B01. What is the relationship between the electric and magnetic fields of an electromagnetic wave? 电磁波的电场和磁场之间的关系是什么？

1. They travel at different speeds 它们以不同的速度行驶
2. They are in parallel 它们是平行的
3. They revolve in opposite directions 它们以相反的方向旋转
4. They are at right angles 它们成直角

T3B02. What property of a radio wave defines its polarization? 无线电波的什么性质决定了它的极化？

1. The orientation of the electric field 电场的方向
2. The orientation of the magnetic field 磁场的方向
3. The ratio of the energy in the magnetic field to the energy in the electric field 磁场中的能量与电场中的能量之比
4. The ratio of the velocity to the wavelength 速度与波长之比

T3B03. What are the two components of a radio wave? 无线电波的两个成分是什么？

1. Impedance and reactance 阻抗和电抗
2. Voltage and current 电压和电流
3. Electric and magnetic fields 电场和磁场
4. Ionizing and non-ionizing radiation 电离辐射和非电离辐射

T3B04. What is the velocity of a radio wave traveling through free space? 无线电波在自由空间中传播的速度是多少？

1. Speed of light 光速
2. Speed of sound 声速
3. 0.86 times the speed of light 光速的0.86倍
4. 1.86 times the speed of sound 声速的1.86倍

T3B05. What is the relationship between wavelength and frequency? 波长和频率之间的关系是什么？

1. Wavelength gets longer as frequency increases 随着频率的增加，波长变长
2. Wavelength gets shorter as frequency increases 随着频率的增加，波长变短
3. Wavelength is constant at all frequencies 波长在所有频率下都是恒定的
4. Wavelength and frequency increase as path length increases 波长和频率随着路径长度的增加而增加

T3B06. What is the formula for converting frequency to approximate wavelength in meters? 将频率转换为近似波长（以米为单位）的公式是什么？

1. Wavelength in meters equals frequency in hertz multiplied by 300 以米为单位的波长等于以赫兹为单位的频率乘以300
2. Wavelength in meters equals frequency in hertz divided by 300 以米为单位的波长等于以赫兹为单位的频率除以300
3. Wavelength in meters equals frequency in megahertz divided by 300 以米为单位的波长等于以兆赫为单位的频率除以300
4. Wavelength in meters equals 300 divided by frequency in megahertz 波长（米）等于300除以频率（兆赫）

T3B07. In addition to frequency, which of the following is used to identify amateur radio bands? 除了频率，以下哪一项用于识别业余无线电波段？

1. The approximate wavelength in meters 近似波长（以米为单位）
2. Traditional letter/number designators 传统字母/数字指示符
3. Channel numbers 通道编号
4. All these choices are correct 所有这些选择都是正确的

T3B08. What frequency range is referred to as VHF? 甚高频的频率范围是什么？

1. 30 kHz to 300 kHz 30 kHz至300 kHz
2. 30 MHz to 300 MHz 30 MHz至300 MHz
3. 300 kHz to 3000 kHz 300 kHz至3000 kHz
4. 300 MHz to 3000 MHz 300 MHz至3000 MHz

T3B09. What frequency range is referred to as UHF? 什么频率范围被称为超高频？

1. 30 to 300 kHz 30至300千赫
2. 30 to 300 MHz 30至300 MHz
3. 300 to 3000 kHz 300至3000千赫
4. 300 to 3000 MHz 300至3000 MHz

T3B10. What frequency range is referred to as HF? 什么频率范围被称为HF？

1. 300 to 3000 MHz 300至3000 MHz
2. 30 to 300 MHz 30至300 MHz
3. 3 to 30 MHz 3至30 MHz
4. 300 to 3000 kHz 300至3000千赫

T3B11. What is the approximate velocity of a radio wave in free space? 无线电波在自由空间中的近似速度是多少？

1. 150,000,000 meters per second 每秒150000000米
2. 300,000,000 meters per second 每秒30000000米
3. 300,000,000 miles per hour 30000000英里/小时
4. 150,000,000 miles per hour 每小时150000000英里

T3B12. Which of these frequencies travels at the highest velocity in free space? 在自由空间中，哪个频率的传播速度最高？

1. Microwaves 微波
2. UHF 超高频
3. VHF 甚高频
4. All radio frequencies travel at the same velocity 所有射频以相同的速度传播

T3C01. Why are simplex UHF signals rarely heard beyond their radio horizon? 为什么单工超高频信号很少在无线电范围之外被听到？

1. They are too weak to go very far 他们太弱了，走不了多远
2. FCC regulations prohibit them from going more than 50 miles FCC规定禁止他们行驶超过50英里
3. UHF signals are usually not propagated by the ionosphere 超高频信号通常不会通过电离层传播
4. UHF signals are absorbed by the ionospheric D region 超高频信号被电离层D区吸收

T3C02. What is a characteristic of HF communication compared with communications on VHF and higher frequencies? 与甚高频和更高频率的通信相比，高频通信的特点是什么？

1. HF antennas are generally smaller HF天线通常较小
2. HF accommodates wider bandwidth signals HF可容纳更宽带宽的信号
3. Long-distance ionospheric propagation is far more common on HF 电离层在高频上的远距离传播要常见得多
4. There is less atmospheric interference (static) on HF HF受到的大气干扰（静态）较少

T3C03. What is one characteristic of VHF signals received via auroral backscatter? 通过极光反向散射接收的甚高频信号的一个特征是什么？

1. They are often received from 10,000 miles or more 它们通常从10000英里或更远的地方接收
2. They are distorted, with a characteristic raspy sound 它们变形了，声音很刺耳
3. They occur only during winter nighttime hours 它们只发生在冬季夜间
4. They are generally strongest when your antenna is aimed west 当你的天线指向西方时，它们通常是最强的

T3C04. Which of the following types of propagation is most commonly associated with occasional strong signals on the 10-, 6-, and 2-meter bands from beyond the radio horizon? 以下哪种传播类型最常与无线电视界外10米、6米和2米波段的偶尔强信号有关？

1. Backscatter 反向散射
2. Sporadic E 零星E
3. D region absorption D区吸收
4. Gray-line propagation 灰线传播

T3C05. Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations? 以下哪种影响可能会使无线电信号在发射站和接收站之间越过障碍物？

1. Knife-edge diffraction 刀刃衍射
2. Faraday rotation 法拉第旋转
3. Quantum tunneling 量子隧穿
4. Doppler shift 多普勒频移

T3C06. What type of propagation is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis? 什么类型的传播负责允许超视距VHF和UHF通信定期覆盖大约300英里的范围？

1. Tropospheric ducting 对流层导管
2. D region refraction D区折射
3. F2 region refraction F2区域折射
4. Faraday rotation 法拉第旋转

T3C07. What band is best suited for communicating via meteor scatter? 哪种波段最适合通过流星散射进行通信？

1. 33 centimeters 33厘米
2. 6 meters 6米
3. 2 meters 2米
4. 70 centimeters 70厘米

T3C08. What causes tropospheric ducting? 是什么导致对流层传导？

1. Discharges of lightning during electrical storms 电风暴期间的闪电放电
2. Sunspots and solar flares 太阳黑子和太阳耀斑
3. Updrafts from hurricanes and tornadoes 飓风和龙卷风的上升气流
4. Temperature inversions in the atmosphere 大气中的温度反演

T3C09. What is generally the best time for long-distance 10-meter band propagation via the F region? 通过F区进行长距离10米波段传播的最佳时间通常是什么时候？

1. From dawn to shortly after sunset during periods of high sunspot activity 在太阳黑子活动频繁的时期，从黎明到日落后不久
2. From shortly after sunset to dawn during periods of high sunspot activity 在太阳黑子活动频繁的时期，从日落后不久到黎明
3. From dawn to shortly after sunset during periods of low sunspot activity 在太阳黑子活动较低的时期，从黎明到日落后不久
4. From shortly after sunset to dawn during periods of low sunspot activity 从日落后不久到太阳黑子活动较低时期的黎明

T3C10. Which of the following bands may provide long-distance communications via the ionosphere’s F region during the peak of the sunspot cycle? 以下哪一个波段可以在太阳黑子周期的高峰期通过电离层的F区提供远距离通信？

1. 6 and 10 meters 6米和10米
2. 23 centimeters 23厘米
3. 70 centimeters and 1.25 meters 70厘米1.25米
4. All these choices are correct 所有这些选择都是正确的

T3C11. Why is the radio horizon for VHF and UHF signals more distant than the visual horizon? 为什么甚高频和超高频信号的无线电地平线比视觉地平线更远？

1. Radio signals move somewhat faster than the speed of light 无线电信号的传播速度略快于光速
2. Radio waves are not blocked by dust particles 无线电波不会被灰尘颗粒阻挡
3. The atmosphere refracts radio waves slightly 大气层轻微地折射无线电波
4. Radio waves are blocked by dust particles 无线电波被尘粒阻挡

T4A01. Which of the following is an appropriate power supply rating for a typical 50-watt output mobile FM transceiver? 以下哪一项是典型50瓦输出移动FM收发器的合适电源额定值？

1. 24.0 volts at 4 amperes 24.0伏，4安培
2. 13.8 volts at 4 amperes 13.8伏，4安培
3. 24.0 volts at 12 amperes 24.0伏，12安培
4. 13.8 volts at 12 amperes 13.8伏，12安培

T4A02. Which of the following should be considered when selecting an accessory SWR meter? 选择附件SWR表时应考虑以下哪一项？

1. The frequency and power level at which the measurements will be made 进行测量的频率和功率水平
2. The distance that the meter will be located from the antenna 仪表与天线的距离
3. The maximum SWR anticipated on the transmission line 输电线路上预期的最大SWR
4. The ability of the meter to compensate for a poor transmission line match to the antenna 仪表补偿传输线与天线匹配不良的能力

T4A03. Why are short, heavy-gauge wires used for a transceiver’s DC power connection? 为什么收发器的直流电源连接使用短而粗的电线？

1. To minimize voltage drop when transmitting 传输时尽量减少电压降
2. To provide a close match to the power supply output impedance 提供与电源输出阻抗的紧密匹配
3. To avoid RF interference 避免射频干扰
4. To minimize radiative losses in the power cable 尽量减少电力电缆中的辐射损失

T4A04. How are the audio input and output of a transceiver connected in a station configured to operate using FT8? 如何将站中连接的收发器的音频输入和输出配置为使用FT8进行操作？

1. To a computer running a terminal program and connected to a terminal node controller unit 到运行终端程序并连接到终端节点控制器单元的计算机
2. To the audio output and input of a computer running FT8 software 运行FT8软件的计算机的音频输出和输入
3. To an FT8 conversion unit, a keyboard, and a computer monitor 到FT8转换单元、键盘和计算机监视器
4. To a computer connected to the FT8converter.com website 连接到FT8converter.com网站的计算机

T4A05. Where should an RF power meter be installed? 射频功率计应安装在哪里？

1. In the feed line, between the transmitter and antenna 在发射器和天线之间的馈线中
2. At the power supply output 在电源输出处
3. In parallel with the push-to-talk line and the antenna 与按键通话线路和天线平行
4. In the power supply cable, as close as possible to the radio 在电源电缆中，尽可能靠近收音机

T4A06. What signals are used in a computer-radio interface for digital mode operation? 在数字模式操作的计算机无线电接口中使用了哪些信号？

1. Receive and transmit mode, status, and location 接收和传输模式、状态和位置
2. Antenna and RF power 天线和射频功率
3. Receive audio, transmit audio, and transmitter keying 接收音频、发送音频和发射器键控
4. NMEA GPS location and DC power NMEA GPS定位和直流电源

T4A07. Which of the following is one of the connections required between a computer and a transceiver to operate digital modes? 以下哪一项是计算机和收发器之间操作数字模式所需的连接之一？

1. Computer “line out” to transceiver push-to-talk 电脑“排队”收发信机按键通话
2. Computer “line in” to transceiver push-to-talk 计算机“线路接入”收发器按键通话
3. Computer “line in” to transceiver speaker connector 计算机“线路输入”至收发器扬声器连接器
4. Computer “line out” to transceiver speaker connector 计算机“线路输出”至收发器扬声器连接器

T4A08. Which of the following conductors is preferred for bonding at RF? 以下哪种导体更适合在射频下接合？

1. Copper braid removed from coaxial cable 从同轴电缆上拆下铜编织物
2. Copper-clad steel wire 铜包钢线
3. Twisted-pair cable 双绞线
4. Flat copper strap 扁铜带

T4A09. How can you determine the length of time that equipment can be powered from a battery? 如何确定设备由电池供电的时间长度？

1. Divide the watt-hour rating of the battery by the peak power consumption of the equipment 将电池的额定功率除以设备的峰值功耗
2. Divide the battery ampere-hour rating by the average current draw of the equipment 将电池额定电流除以设备的平均电流
3. Multiply the watts per hour consumed by the equipment by the battery power rating 将设备每小时消耗的瓦特数乘以电池额定功率
4. Multiply the square of the current rating of the battery by the input resistance of the equipment 将电池额定电流的平方乘以设备的输入电阻

T4A10. What function does a digital mode hotspot perform for nearby transceivers? 数字模式热点对附近的收发器执行什么功能？

1. Communication with a digital voice or data network 与数字语音或数据网络通信
2. FT8 digital communications via AFSK using a smartphone connected to the internet 使用连接到互联网的智能手机通过AFSK进行FT8数字通信
3. RTTY encoding and decoding without a computer RTTY编码和解码无需计算机
4. High-speed digital communications for meteor scatter 流星散射的高速数字通信

T4A11. Where should the negative power return of a mobile transceiver be connected in a vehicle? 移动收发器的负电源回路应连接在车辆的何处？

1. At the 12-volt battery chassis ground 在12伏蓄电池底盘接地处
2. To the shell of the power connector 到电源连接器的外壳
3. To any metal part of the vehicle 至车辆的任何金属部件
4. Through the transceiver’s mounting bracket 通过收发器的安装支架

T4A12. What is an electronic keyer? 什么是电子钥匙？

1. A device for switching antennas from transmit to receive 一种用于将天线从发射切换到接收的设备
2. A device for voice activated switching from receive to transmit 一种用于语音激活从接收切换到发送的设备
3. A device that assists in manual sending of Morse code 一种帮助手动发送莫尔斯电码的设备
4. An interlock to prevent unauthorized use of a radio 防止未经授权使用无线电的联锁装置

T4B01. What is the effect of excessive microphone gain on SSB transmissions? 麦克风增益过大对单边带传输有什么影响？

1. Frequency instability 频率不稳定性
2. Distorted transmitted audio 传输音频失真
3. Increased SWR SWR增加
4. Sideband inversion 边带反转

T4B02. Which of the following can be used to enter a transceiver’s operating frequency? 以下哪项可用于输入收发器的工作频率？

1. The keypad or VFO knob 键盘或VFO旋钮
2. The CTCSS or DTMF encoder CTCSS或DTMF编码器
3. The Automatic Frequency Control 自动频率控制
4. All these choices are correct 所有这些选择都是正确的

T4B03. How is squelch adjusted so that a weak FM signal can be heard? 如何调整静噪，以便可以听到微弱的调频信号？

1. Set the squelch threshold so that receiver output audio is on all the time 设置静噪阈值，使接收器输出音频始终打开
2. Turn up the audio level until it overcomes the squelch threshold 调高音频电平，直到它超过静噪阈值
3. Turn on the anti-squelch function 打开防静噪功能
4. Enable squelch enhancement 启用静噪增强

T4B04. What does an FM signal sound like when received slightly off frequency? 当接收到稍微偏离频率的FM信号时，声音会是什么样子？

1. The audio increases in pitch 音频音调增加
2. The audio decrease in pitch 音频音调降低
3. There is no effect except for reduction in amplitude 除了振幅减小外，没有其他影响
4. The audio becomes distorted 音频失真

T4B05. What does the scanning function of an FM transceiver do? 调频收发器的扫描功能是什么？

1. Checks incoming signal deviation 检查输入信号偏差
2. Prevents interference to nearby repeaters 防止干扰附近的中继器
3. Tunes through a range of frequencies to check for activity 调整一系列频率以检查活动
4. Tunes through a range of frequencies to determine the antenna’s resonant frequency 通过一系列频率进行调谐，以确定天线的谐振频率

T4B06. Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low? 如果返回到CQ呼叫的单边带信号的音高过高或过低，可以使用以下哪种控制？

1. The AGC or limiter AGC或限制器
2. The bandwidth selection 带宽选择
3. The tone squelch 音调静噪
4. The RIT or Clarifier RIT或澄清器

T4B07. What is a DMR “code plug”? 什么是DMR“代码插头”？

1. An adapter cable used to connect a DMR radio to a computer for internet access 用于将DMR无线电连接到计算机以访问互联网的适配器电缆
2. Configuration data loaded onto your radio to access repeaters and talkgroups 配置数据加载到您的收音机上，以访问中继器和通话组
3. An upgrade to DMR programming software provided by the radio manufacturer to accommodate new radio models 升级无线电制造商提供的DMR编程软件，以适应新的无线电型号
4. A Coder-Decoder (CODEC) that converts analog voice data to DMR digital data and vice versa 一种编解码器（CODEC），将模拟语音数据转换为DMR数字数据，反之亦然

T4B08. What is the advantage of having a choice of receiver filter bandwidths in a multimode transceiver? 在多模收发器中选择接收器滤波器带宽的优点是什么？

1. Permits monitoring several modes simultaneously by selecting a separate filter for each mode 通过为每种模式选择单独的过滤器，允许同时监视多种模式
2. Permits noise or interference reduction by selecting a bandwidth matching the mode 允许通过选择与模式匹配的带宽来减少噪声或干扰
3. Increases the number of frequencies that can be stored in memory 增加可存储在内存中的频率数量
4. Increases the amount of offset between receive and transmit frequencies 增加接收频率和发射频率之间的偏移量

T4B09. How is a specific group of stations selected on a DMR digital voice transceiver? 如何在DMR数字语音收发器上选择一组特定的电台？

1. By retrieving the frequencies from transceiver memory 通过从收发器存储器中检索频率
2. By enabling the group’s CTCSS tone 通过启用组的CTCSS音调
3. By entering the group’s identification code 通过输入组的识别码
4. By inserting a five-pin, pre-programmed code plug 插入一个五针预编程代码插头

T4B10. Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception? 以下哪种接收机滤波器带宽为SSB接收提供了最佳的信噪比？

1. 500 Hz 500赫兹
2. 1000 Hz 1000赫兹
3. 2400 Hz 2400赫兹
4. 5000 Hz 5000赫兹

T4B11. Which of the following must be programmed into a D-STAR digital transceiver before transmitting? 在发送之前，以下哪项必须编程到D-STAR数字收发器中？

1. Your call sign 你的呼号
2. Your output power 您的输出功率
3. The codec type being used 正在使用的编解码器类型
4. All these choices are correct 所有这些选择都是正确的

T4B12. What is the result of tuning an FM receiver above or below a signal’s frequency? 将调频接收机调谐到高于或低于信号频率的结果是什么？

1. Change in audio pitch 音频音调变化
2. Sideband inversion 边带反转
3. Generation of a heterodyne tone 外差音调的产生
4. Distortion of the signal’s audio 信号音频失真

T5A01. Electrical current is measured in which of the following units? 电流是用以下哪一个单位测量的？

1. Volts 伏特
2. Watts 瓦特
3. Ohms 欧姆
4. Amperes 安培

T5A02. Electrical power is measured in which of the following units? 用下列哪一个单位测量电力？

1. Volts 伏特
2. Watts 瓦特
3. Watt-hours 瓦时
4. Amperes 安培

T5A03. What is the term for the flow of electrons in an electric circuit? 电路中电子流动的术语是什么？

1. Voltage 电压
2. Amperes per second 安培每秒
3. Volts per second 伏特每秒
4. Current 现在的

T5A04. What term describes the number of times per second that an alternating current makes a complete cycle? 哪个术语描述了交流电每秒完成一个完整循环的次数？

1. Pulse rate 脉搏率
2. Wave number 波数
3. Frequency 频率
4. Wavelength 波长

T5A05. A difference in which of the following causes electron flow? 以下哪一项的差异会导致电子流动？

1. Voltage 电压
2. Ampere-hours 安培小时
3. Capacitance 电容
4. Inductance 电感

T5A06. What is the unit of frequency? 频率的单位是多少？

1. Hertz 赫兹
2. Henry 亨利
3. Farad 法拉
4. Epicycles per second 每秒Epicycles

T5A07. Why are metals generally good conductors of electricity? 为什么金属通常是电的良导体？

1. They have relatively high density 它们的密度相对较高
2. They have many free electrons 它们有许多自由电子
3. They have many free protons 它们有许多自由质子
4. They have relatively high Young’s modulus values 它们具有相对较高的杨氏模量值

T5A08. Which of the following is a good electrical insulator? 以下哪一项是好的电绝缘体？

1. Sea water 海水
2. Glass 玻璃
3. Stainless steel 不锈钢
4. Graphite 石墨

T5A09. Which of the following describes alternating current? 下列哪一项描述交流电？

1. Current that alternates between a positive direction and zero 在正方向和零之间交替的电流
2. Current that alternates between a negative direction and zero 在负方向和零之间交替的电流
3. Current that alternates between positive and negative directions 在正方向和负方向之间交替的电流
4. All these answers are correct 所有这些答案都是正确的

T5A10. Which term describes the rate at which electrical energy is used? 哪个术语描述了电能的使用率？

1. Resistance 反对
2. Current 现在的
3. Power 权力
4. Voltage 电压

T5A11. What type of current flow is opposed by resistance? 什么类型的电流与电阻相反？

1. Direct current 直流
2. Alternating current 交流电
3. RF current 射频电流
4. All these choices are correct 所有这些选择都是正确的

T5A12. What describes the number of times per second that an alternating current makes a complete cycle? 交流电流每秒完成一个完整循环的次数是多少？

1. Pulse rate 脉冲频率
2. Speed 速度
3. Wavelength 波长
4. Frequency 频率

T5B01. How many milliamperes is 1.5 amperes? 1.5安培是多少毫安？

1. 0.0000015 milliamperes 0.0000015毫安
2. 0.0015 milliamperes 0.0015毫安
3. 1500 milliamperes 1500毫安
4. 1,500,000 milliamperes 1500000毫安

T5B02. Which is equal to 1,500,000 hertz? 哪个等于1500000赫兹？

1. 1500 kHz 1500千赫
2. 1500 MHz 1500兆赫
3. 15 GHz 15千兆赫
4. 150 kHz 150千赫

T5B03. Which is equal to one kilovolt? 哪个等于1千伏？

1. One one-thousandth of a volt 千分之一伏特
2. One hundred volts 一百伏
3. One thousand volts 一千伏
4. One million volts 一百万伏

T5B04. Which is equal to one microvolt? 哪个等于一微伏？

1. One one-millionth of a volt 百万分之一伏特
2. One million volts 一百万伏
3. One thousand kilovolts 一千千伏
4. One one-thousandth of a volt 千分之一伏特

T5B05. Which is equal to 500 milliwatts? 哪个等于500毫瓦？

1. 5 watts 5瓦
2. 0.5 watts 0.5瓦
3. 500,000 watts 500000瓦
4. 500,000,000 watts 5亿瓦

T5B06. Which is equal to 3000 milliamperes? 哪个等于3000毫安？

1. 0.003 amperes 0.003安培
2. 0.3 amperes 0.3安培
3. 3,000,000 amperes 3000000安培
4. 3 amperes 3安培

T5B07. Which is equal to 3.525 MHz? 哪个等于3.525 MHz？

1. 0.003525 kHz 0.003525 kHz
2. 35.25 kHz 35.25 kHz
3. 3525 kHz 3525 kHz
4. 3,525,000 kHz 3,525,000 kHz

T5B08. Which is equal to 1,000,000 picofarads? 哪个等于1,000,000皮法？

1. 0.001 microfarads 0.001微法
2. 1 microfarad 1微法拉
3. 1000 microfarads 1000微法
4. 1,000,000,000 microfarads 1,000,000,000微法

T5B09. Which decibel value most closely represents a power increase from 5 watts to 10 watts? 哪个分贝值最能代表功率从5瓦增加到10瓦？

1. 2 dB 2分贝
2. 3 dB 3分贝
3. 5 dB 5分贝
4. 10 dB 10分贝

T5B10. Which decibel value most closely represents a power decrease from 12 watts to 3 watts? 哪个分贝值最能代表功率从12瓦下降到3瓦？

1. -1 dB -1分贝
2. -3 dB -3分贝
3. -6 dB -6分贝
4. -9 dB -9分贝

T5B11. Which decibel value represents a power increase from 20 watts to 200 watts? 哪个分贝值代表功率从20瓦增加到200瓦？

1. 10 dB 10分贝
2. 12 dB 12分贝
3. 18 dB 18分贝
4. 28 dB 28分贝

T5B12. Which is equal to 28400 kHz? 哪个等于28400千赫？

1. 28.400 kHz 28.400千赫
2. 2.800 MHz 2.800兆赫
3. 284.00 MHz 284.00兆赫
4. 28.400 MHz 28.400兆赫

T5B13. Which is equal to 2425 MHz? 哪个等于2425 MHz？

1. 0.002425 GHz 0.002425千兆赫
2. 24.25 GHz 24.25千兆赫
3. 2.425 GHz 2.425千兆赫
4. 242.5 GHz 242.5千兆赫

T5C01. What describes the ability to store energy in an electric field? 什么描述了在电场中储存能量的能力？

1. Inductance 电感
2. Resistance 反对
3. Frequency 频率
4. Capacitance 电容

T5C02. What is the unit of capacitance? 电容的单位是多少？

1. Farad 法拉
2. Ohm 欧姆
3. Volt 伏特
4. Henry 亨利

T5C03. What describes the ability to store energy in a magnetic field? 什么描述了在磁场中储存能量的能力？

1. Admittance 进入权
2. Capacitance 电容
3. Resistance 反对
4. Inductance 电感

T5C04. What is the unit of inductance? 电感的单位是多少？

1. Coulomb 库仑
2. Farad 法拉
3. Henry 亨利
4. Ohm 欧姆

T5C05. What is the unit of impedance? 阻抗的单位是多少？

1. Volt 伏特
2. Ampere 安培
3. Coulomb 库仑
4. Ohm 欧姆

T5C06. What is the abbreviation for kilohertz? 千赫的缩写是什么？

1. kHz 千赫
2. khz 千赫
3. KHz 千赫
4. KHZ 千赫

T5C07. What is the abbreviation for megahertz? 兆赫的缩写是什么？

1. mHz 兆赫
2. mHZ 兆赫
3. Mhz 兆赫
4. MHz 兆赫

T5C08. What formula is used to calculate electrical power (P) in a DC circuit? 使用什么公式来计算直流电路中的电功率（P）？

1. P = I x E P=I x E
2. P = E / I P=E/I
3. P = I2 x E P=I2 x E
4. P = I / E P=I/E

T5C09. How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes? 13.8伏直流电压和10安培电流能提供多少功率？

1. 138 watts 138瓦
2. 0.7 watts 0.7瓦
3. 23.8 watts 23.8瓦
4. 3.8 watts 3.8瓦

T5C10. How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes? 12伏直流电压和2.5安培电流能提供多少功率？

1. 4.8 watts 4.8瓦
2. 30 watts 30瓦
3. 14.5 watts 14.5瓦
4. 0.208 watts 0.208瓦

T5C11. How much current is required to deliver 120 watts at a voltage of 12 volts DC? 在12伏直流电压下，需要多少电流才能提供120瓦的功率？

1. 0.1 amperes 0.1安培
2. 10 amperes 10安培
3. 12 amperes 12安培
4. 132 amperes 132安培

T5C12. What is impedance? 什么是阻抗？

1. The opposition to AC current flow 交流电流的反向
2. The inverse of resistance 电阻的倒数
3. The inverse of reactance 电抗的倒数
4. The power handling capability of a component 组件的功率处理能力

T5C13. What is the abbreviation for kilohertz? 千赫的缩写是什么？

1. KHZ 千赫
2. khz 千赫
3. khZ 千赫
4. kHz 千赫

T5D01. What formula is used to calculate current in a circuit? 用什么公式来计算电路中的电流？

1. I = E x R I=E x R
2. I = E / R I=E/R
3. I = E2 x R I=E2 x R
4. I = E2 / R I=E2/R

T5D02. What formula is used to calculate voltage in a circuit? 用什么公式来计算电路中的电压？

1. E = I x R E=I x R
2. E = I / R E=I/R
3. E = I2 x R E=I2 x R
4. E = I2 / R E=I2/R

T5D03. What formula is used to calculate resistance in a circuit? 用什么公式来计算电路中的电阻？

1. R = E x I R=E x I
2. R = E / I R=E/I
3. R = E + I R=E+I
4. R = E - I R=E-I

T5D04. What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts? 当连接到90伏时，电流为3安培的电路的电阻是多少？

1. 3 ohms 3欧姆
2. 30 ohms 30欧姆
3. 1/30 ohm 1/30欧姆
4. 270 ohms 270欧姆

T5D05. What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes? 施加电压为12伏，电流为1.5安培的电路的电阻是多少？

1. 18 ohms 18欧姆
2. 0.125 ohms 0.125欧姆
3. 8 ohms 8欧姆
4. 13.5 ohms 13.5欧姆

T5D06. What is the resistance of a circuit that draws 4 amperes from a 12-volt source? 从12伏电源中汲取4安培电流的电路的电阻是多少？

1. 3 ohms 3欧姆
2. 16 ohms 16欧姆
3. 48 ohms 48欧姆
4. 8 ohms 8欧姆

T5D07. What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms? 施加电压为120伏、电阻为80欧姆的电路中的电流是多少？

1. 9600 amperes 9600安培
2. 200 amperes 200安培
3. 0.667 amperes 0.667安培
4. 1.5 amperes 1.5安培

T5D08. What is the current through a 100-ohm resistor connected across 200 volts? 通过连接在200伏之间的100欧姆电阻器的电流是多少？

1. 20,000 amperes 20000安培
2. 0.5 amperes 0.5安培
3. 2 amperes 2安培
4. 100 amperes 100安培

T5D09. What is the current through a 24-ohm resistor connected across 240 volts? 跨240伏连接的24欧姆电阻器的电流是多少？

1. 2400 amperes 2400安培
2. 0.1 amperes 0.1安培
3. 10 amperes 10安培
4. 5760 amperes 5760安培

T5D10. What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it? 如果0.5安培的电流流过2欧姆电阻器，那么电阻两端的电压是多少？

1. 1 volt 1伏
2. 0.25 volts 0.25伏
3. 2.5 volts 2.5伏
4. 1.5 volts 1.5伏

T5D11. What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it? 如果有1安培的电流流过10欧姆电阻器，那么电阻器两端的电压是多少？

1. 1 volt 1伏
2. 10 volts 10伏
3. 11 volts 11伏
4. 9 volts 9伏

T5D12. What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it? 如果有2安培的电流流过10欧姆电阻器，那么电阻器两端的电压是多少？

1. 8 volts 8伏
2. 0.2 volts 0.2伏
3. 12 volts 12伏
4. 20 volts 20伏

T5D13. In which type of circuit is the current always the same through all components? 在哪种类型的电路中，通过所有组件的电流总是相同的？

1. Series 系列
2. Parallel 平行的
3. Resonant 嘹亮的
4. Branch 树枝

T5D14. In which type of circuit is the voltage always the same across all components? 在哪种类型的电路中，所有组件上的电压总是相同的？

1. Series 系列
2. Parallel 平行的
3. Resonant 嘹亮的
4. Branch 树枝

T6A01. What electrical component opposes the flow of current in a DC circuit? 在直流电路中，什么电气元件阻碍电流流动？

1. Inductor 电感器
2. Resistor 电阻器
3. Inverter 逆变器
4. Transformer 变压器

T6A02. What type of component is often used as an adjustable volume control? 什么类型的部件经常用作可调音量控制器？

1. Fixed resistor 固定电阻器
2. Power resistor 功率电阻器
3. Potentiometer 电位计
4. Transformer 变压器

T6A03. What electrical parameter is controlled by a potentiometer? 电位计控制什么电气参数？

1. Inductance 电感
2. Resistance 反对
3. Capacitance 电容
4. Field strength 场强

T6A04. What electrical component stores energy in an electric field? 什么电气元件在电场中储存能量？

1. Resistor 电阻器
2. Capacitor 电容器
3. Inductor 电感器
4. Diode 二极管

T6A05. What type of electrical component consists of conductive surfaces separated by an insulator? 什么类型的电气部件由绝缘体分隔的导电表面组成？

1. Resistor 电阻器
2. Potentiometer 电位计
3. Oscillator 振荡器
4. Capacitor 电容器

T6A06. What type of electrical component stores energy in a magnetic field? 什么类型的电气元件在磁场中储存能量？

1. Resistor 电阻器
2. Capacitor 电容器
3. Inductor 电感器
4. Diode 二极管

T6A07. What electrical component is typically constructed as a coil of wire? 什么电气元件通常被构造成线圈？

1. Transistor 晶体管
2. Capacitor 电容器
3. Diode 二极管
4. Inductor 电感器

T6A08. What is the function of an SPDT switch? SPDT开关的功能是什么？

1. A single circuit is opened or closed 单个电路开路或闭合
2. Two circuits are opened or closed 两条电路开路或闭合
3. A single circuit is switched between one of two other circuits 单个电路在另外两个电路中的一个之间切换
4. Two circuits are each switched between one of two other circuits 两个电路分别在另外两个电路中的一个之间切换

T6A09. What type of switch is represented by component 3 in figure T-2? 图T-2中的组件3代表了哪种类型的开关？

1. Single-pole single-throw 单刀单掷开关
2. Single-pole double-throw 单刀双掷
3. Double-pole single-throw 双极单掷
4. Double-pole double-throw 双刀双掷

T6A10. Which of the following battery chemistries is rechargeable? 以下哪种电池化学物质是可充电的？

1. Nickel-metal hydride 金属氢化物镍
2. Lithium-ion 锂离子
3. Lead-acid 铅酸
4. All these choices are correct 所有这些选择都是正确的

T6A11. Which of the following battery chemistries is not rechargeable? 以下哪种电池化学物质是不可充电的？

1. Nickel-cadmium 镍镉
2. Carbon-zinc 碳锌
3. Lead-acid 铅酸
4. Lithium-ion 锂离子

T6B01. Which is true about forward voltage drop in a diode? 关于二极管中的正向电压降，哪个是正确的？

1. It is lower in some diode types than in others 某些二极管类型的电流比其他类型的低
2. It is proportional to peak inverse voltage 它与峰值反向电压成正比
3. It indicates that the diode is defective 这表明二极管有缺陷
4. It has no impact on the voltage delivered to the load 它对输送到负载的电压没有影响

T6B02. What electronic component allows current to flow in only one direction? 什么电子元件只允许电流沿一个方向流动？

1. Resistor 电阻器
2. Fuse 保险丝
3. Diode 二极管
4. Driven element 从动元件

T6B03. Which of these components can be used as an electronic switch? 以下哪些组件可以用作电子开关？

1. Varistor 压敏电阻
2. Potentiometer 电位器
3. Transistor 晶体管
4. Thermistor 热敏电阻

T6B04. Which of the following components can consist of three regions of semiconductor material? 以下哪个组件可以由半导体材料的三个区域组成？

1. Alternator 交流发电机
2. Transistor 晶体管
3. Triode 三极管
4. Pentode 五极管

T6B05. What type of transistor has a gate, drain, and source? 什么类型的晶体管有栅极、漏极和源极？

1. Varistor 压敏电阻器
2. Field-effect 场效应
3. Hall-effect 霍尔效应
4. Bipolar junction 双极结

T6B06. How is the cathode lead of a semiconductor diode often marked on the package? 半导体二极管的阴极引线通常是如何标记在封装上的？

1. With the word "cathode" 带有“阴极”一词
2. With a stripe 带条纹
3. With the letter C 带有字母C
4. With the letter K 带有字母K

T6B07. What causes a light-emitting diode (LED) to emit light? 是什么导致发光二极管（LED）发光？

1. Forward current 正向电流
2. Reverse current 反向电流
3. Capacitively-coupled RF signal 电容耦合RF信号
4. Inductively-coupled RF signal 电感耦合RF信号

T6B08. What does the abbreviation FET stand for? 缩写FET代表什么？

1. Frequency Emission Transmitter 频率发射发射器
2. Fast Electron Transistor 快电子晶体管
3. Free Electron Transmitter 自由电子发射器
4. Field Effect Transistor 场效应晶体管

T6B09. What are the names for the electrodes of a diode? 二极管电极的名称是什么？

1. Plus and minus 加减法
2. Source and drain 源和漏
3. Anode and cathode 阳极和阴极
4. Gate and base 闸门和底座

T6B10. Which of the following can provide power gain? 以下哪项可以提供功率增益？

1. Transformer 变压器
2. Transistor 晶体管
3. Reactor 核反应堆
4. Resistor 电阻器

T6B11. What does the term gain mean in amplifiers? 增益一词在放大器中是什么意思？

1. The output signal voltage relative to the input signal voltage 输出信号电压相对于输入信号电压
2. The output signal current relative to the input signal current 输出信号电流相对于输入信号电流
3. The output signal power relative to the input signal power 输出信号功率相对于输入信号功率
4. All these choices are correct 所有这些选择都是正确的

T6B12. What are the names of the electrodes of a bipolar junction transistor? 双极结型晶体管的电极名称是什么？

1. Signal, bias, power 信号、偏置、功率
2. Emitter, base, collector 发射器、底座、收集器
3. Input, output, supply 输入、输出、电源
4. Pole one, pole two, output 极点一，极点二，输出

T6C01. What is an electrical diagram using standard component symbols called? 使用标准元件符号的电气图叫什么？

1. Connection chart 连接图
2. Instrumentation system 仪表系统
3. Schematic 略图的
4. Flow chart 流程图

T6C02. What is component 1 in figure T-1? 图T-1中的部件1是什么？

1. Resistor 电阻器
2. Transistor 晶体管
3. Battery 电池
4. Connector 连接器

T6C03. What is component 2 in figure T-1? 图T-1中的组件2是什么？

1. Resistor 电阻器
2. Transistor 晶体管
3. Indicator lamp 指示灯
4. Connector 连接器

T6C04. What is component 3 in figure T-1? 图T-1中的组件3是什么？

1. Resistor 电阻器
2. Transistor 晶体管
3. Lamp 灯
4. Ground symbol 接地符号

T6C05. What is component 4 in figure T-1? 图T-1中的部件4是什么？

1. Resistor 电阻器
2. Transistor 晶体管
3. Ground symbol 接地符号
4. Battery 电池

T6C06. What is component 6 in figure T-2? 图T-2中的部件6是什么？

1. Resistor 电阻器
2. Capacitor 电容器
3. Regulator IC 调节器IC
4. Transistor 晶体管

T6C07. What is component 8 in figure T-2? 图T-2中的部件8是什么？

1. Resistor 电阻器
2. Inductor 电感器
3. Regulator IC 调节器IC
4. Light emitting diode 发光二极管

T6C08. What is component 9 in figure T-2? 图T-2中的部件9是什么？

1. Variable capacitor 可变电容器
2. Variable inductor 可变电感器
3. Variable resistor 可变电阻器
4. Variable transformer 可变变压器

T6C09. What is component 4 in figure T-2? 图T-2中的部件4是什么？

1. Variable inductor 可变电感器
2. Double-pole switch 双极开关
3. Potentiometer 电位计
4. Transformer 变压器

T6C10. What is component 3 in figure T-3? 图T-3中的部件3是什么？

1. Connector 连接器
2. Meter 米
3. Variable capacitor 可变电容器
4. Variable inductor 可变电感器

T6C11. What is component 4 in figure T-3? 图T-3中的部件4是什么？

1. Antenna 天线
2. Transmitter 变送器
3. Dummy load 假负载
4. Ground 地

T6C12. Which of the following is accurately represented in electrical schematics? 以下哪一项在电气原理图中得到了准确表示？

1. Wire lengths 电线长度
2. Physical appearance of components 部件的物理外观
3. Component connections 组件连接
4. All these choices are correct 所有这些选择都是正确的

T6D01. Which of the following devices or circuits changes an alternating current into a varying direct current signal? 以下哪种设备或电路将交流电转换为变化的直流信号？

1. Transformer 变压器
2. Rectifier 整流器
3. Amplifier 放大器
4. Reflector 反射器

T6D02. What is a relay? 什么是继电器？

1. An electrically-controlled switch 电控开关
2. A current-controlled amplifier 电流控制放大器
3. An inverting amplifier 反相放大器
4. A pass transistor 一个传输晶体管

T6D03. Which of the following is a reason to use shielded wire? 以下哪项是使用屏蔽线的原因？

1. To decrease the resistance of DC power connections 降低直流电源连接的电阻
2. To increase the current carrying capability of the wire 增加电线的载流能力
3. To prevent coupling of unwanted signals to or from the wire 防止不需要的信号与导线耦合或从导线耦合
4. To reduce receiver overload 减少接收器过载

T6D04. Which of the following displays an electrical quantity as a numeric value? 以下哪项将电量显示为数值？

1. Potentiometer 电位计
2. Transistor 晶体管
3. Meter 米
4. Relay 转发

T6D05. What type of circuit controls the amount of voltage from a power supply? 什么类型的电路控制来自电源的电压量？

1. Regulator 监管者
2. Oscillator 振荡器
3. Filter 滤器
4. Phase inverter 相位逆变器

T6D06. What component changes 120 V AC power to a lower AC voltage for other uses? 什么部件将120 V交流电源转换为较低的交流电压用于其他用途？

1. Variable capacitor 可变电容器
2. Transformer 变压器
3. Transistor 晶体管
4. Diode 二极管

T6D07. Which of the following is commonly used as a visual indicator? 以下哪项常用作视觉指示器？

1. LED 发光二极管
2. FET 场效应晶体管
3. Zener diode 齐纳二极管
4. All these choices are correct 所有这些选择都是正确的

T6D08. Which of the following is combined with an inductor to make a resonant circuit? 以下哪一项与电感器相结合以形成谐振电路？

1. Resistor 电阻器
2. Zener diode 齐纳二极管
3. Potentiometer 电位计
4. Capacitor 电容器

T6D09. What is the name of a device that combines several semiconductors and other components into one package? 将几种半导体和其他组件组合在一个封装中的设备的名称是什么？

1. Transducer 传感器
2. Multi-pole relay 多极继电器
3. Integrated circuit 集成电路
4. Transformer 变压器

T6D10. What is the function of component 2 in figure T-1? 图T-1中组件2的功能是什么？

1. Give off light when current flows through it 电流流过时发光
2. Supply electrical energy 提供电能
3. Control the flow of current 控制电流
4. Convert electrical energy into radio waves 将电能转换成无线电波

T6D11. Which of the following is a resonant or tuned circuit? 以下哪一项是谐振电路或调谐电路？

1. An inductor and a capacitor in series or parallel 串联或并联的电感器和电容器
2. A linear voltage regulator 线性电压调节器
3. A resistor circuit used for reducing standing wave ratio 一种用于降低驻波比的电阻电路
4. A circuit designed to provide high-fidelity audio 设计用于提供高保真音频的电路

T7A01. Which term describes the ability of a receiver to detect the presence of a signal? 哪个术语描述了接收器检测信号存在的能力？

1. RF gain 射频增益
2. Sensitivity 体贴
3. Selectivity 选择性
4. Total Harmonic Distortion 总谐波失真

T7A02. What is a transceiver? 什么是收发器？

1. A device that combines a receiver and transmitter 一种将接收器和发射器结合在一起的设备
2. A device for matching feed line impedance to 50 ohms 一种将馈线阻抗匹配到50欧姆的设备
3. A device for automatically sending and decoding Morse code 一种自动发送和解码莫尔斯电码的设备
4. A device for converting receiver and transmitter frequencies to another band 一种用于将接收机和发射机频率转换为另一频带的设备

T7A03. Which of the following is used to convert a signal from one frequency to another? 以下哪项用于将信号从一个频率转换为另一个频率？

1. Phase splitter 分相器
2. Mixer 搅拌机
3. Inverter 逆变器
4. Amplifier 放大器

T7A04. Which term describes the ability of a receiver to discriminate between multiple signals? 哪个术语描述了接收器区分多个信号的能力？

1. Discrimination ratio 歧视率
2. Sensitivity 体贴
3. Selectivity 选择性
4. Harmonic distortion 谐波失真

T7A05. What is the name of a circuit that generates a signal at a specific frequency? 产生特定频率信号的电路的名称是什么？

1. Reactance modulator 电抗调制器
2. Phase modulator 相位调制器
3. Low-pass filter 低通滤波器
4. Oscillator 振荡器

T7A06. What device converts the RF input and output of a transceiver to another band? 什么设备将收发器的RF输入和输出转换为另一个频段？

1. High-pass filter 高通滤波器
2. Low-pass filter 低通滤波器
3. Transverter 变频器
4. Phase converter 相位转换器

T7A07. What is the function of a transceiver’s PTT input? 收发器的PTT输入功能是什么？

1. Input for a key used to send CW 用于发送CW的键的输入
2. Switches transceiver from receive to transmit when grounded 接地时将收发器从接收切换到发送
3. Provides a transmit tuning tone when grounded 接地时提供传输调谐音
4. Input for a preamplifier tuning tone 前置放大器调谐音调的输入

T7A08. Which of the following describes combining speech with an RF carrier signal? 以下哪项描述了将语音与RF载波信号相结合？

1. Impedance matching 阻抗匹配
2. Oscillation 振荡
3. Modulation 调制
4. Low-pass filtering 低通滤波

T7A09. What is the function of the switch which selects either SSB or CW-FM on some VHF power amplifiers? 在某些甚高频功率放大器上选择SSB或CW-FM的开关的功能是什么？

1. Change the mode of the transmitted signal 更改传输信号的模式
2. Set the amplifier for proper operation in the selected mode 将放大器设置为在所选模式下正常工作
3. Change the frequency range of the amplifier to operate in the proper segment of the band 更改放大器的频率范围，使其在适当的频带段内工作
4. Reduce the received signal noise 降低接收信号噪声

T7A10. What can be added to the output of a transceiver to increase the transmitted output power? 可以向收发器的输出添加什么来增加发射输出功率？

1. A potentiometer 电位计
2. An RF power amplifier 射频功率放大器
3. An impedance multiplier 阻抗倍增器
4. All these choices are correct 所有这些选择都是正确的

T7A11. What is the function of the Variable Frequency Oscillator (VFO) circuit in a transceiver? 收发器中的变频振荡器（VFO）电路的功能是什么？

1. Set the receive and transmit frequency 设置接收和发射频率
2. Provide automatic frequency control 提供自动频率控制
3. Inject a variable frequency to allow CW reception 注入可变频率以允许CW接收
4. Generate and demodulate single sideband signals 生成并解调单边带信号

T7B01. What can you do if you are told your FM handheld or mobile transceiver is over-deviating? 如果你被告知你的调频手持或移动收发器偏离了方向，你该怎么办？

1. Talk louder into the microphone 对着麦克风大声说话
2. Let the transceiver cool off 让收发器冷却
3. Change to a higher power level 更改为更高的功率级别
4. Talk farther away from the microphone 远离麦克风说话

T7B02. What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally? 是什么原因导致广播AM或FM收音机无意中接收到业余无线电传输？

1. The receiver is unable to reject strong signals outside the AM or FM band 接收器无法拒绝AM或FM频带外的强信号
2. The microphone gain of the transmitter is turned up too high 发射器的麦克风增益调得太高
3. The audio amplifier of the transmitter is overloaded 发射器的音频放大器过载
4. The deviation of an FM transmitter is set too low 调频发射机的偏差设置过低

T7B03. Which of the following can cause radio frequency interference? 下列哪一项会造成无线电频率干扰？

1. Fundamental overload 基本过载
2. Harmonics 谐波
3. Spurious emissions 虚假排放
4. All these choices are correct 所有这些选择都是正确的

T7B04. Which of the following might be the cause of low RF power output from a solid-state transceiver? 以下哪一项可能是固态收发器射频功率输出低的原因？

1. Poor amplifier noise figure 放大器噪声系数差
2. Poor amplifier linearity 放大器线性度差
3. Low SWR 低SWR
4. High SWR 高SWR

T7B05. Which of the following might reduce interference by an amateur station to a non-amateur over-the-air radio receiver? 以下哪一项可以减少业余电台对非业余无线电台接收机的干扰？

1. Block the amateur signal with a filter at the antenna input of the affected receiver 在受影响接收器的天线输入端用滤波器阻断业余信号
2. Block the interfering signal with a filter on the amateur transmitter 用业余发射机上的滤波器阻断干扰信号
3. Switch the transmitter from FM to SSB 将发射器从FM切换到SSB
4. Switch the transmitter to a narrow-band mode 将发射机切换到窄带模式

T7B06. Which of the following actions should you take if a neighbor tells you that your station’s transmissions are interfering with their radio or TV reception? 如果邻居告诉你电台的传输干扰了他们的广播或电视接收，你应该采取以下哪项措施？

1. Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel 请确保您的电台工作正常，并且在调到同一频道时不会对您自己的收音机或电视造成干扰
2. Immediately turn off your transmitter and contact the nearest FCC office for assistance 立即关闭发射器，并联系最近的FCC办公室寻求帮助
3. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated 在发射器的输出端安装谐波倍频器，并对其进行调谐，直到干扰消除
4. All these choices are correct 所有这些选择都是正确的

T7B07. Which of the following can reduce interference to a 2-meter band transceiver from a nearby commercial FM station? 以下哪一项可以减少附近商业FM电台对2米波段收发器的干扰？

1. Installing an RF preamplifier 安装RF前置放大器
2. Using double-shielded coaxial cable 使用双屏蔽同轴电缆
3. Installing bypass capacitors on the microphone cable 在麦克风电缆上安装旁路电容器
4. Installing a band-reject filter 安装带阻滤波器

T7B08. What should you do if something in a neighbor’s home is causing harmful interference to your amateur station? 如果邻居家里的东西对你的业余电台造成有害干扰，你该怎么办？

1. Work with your neighbor to identify the offending device 与您的邻居一起识别有问题的设备
2. Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference 礼貌地通知邻居FCC规则禁止使用会造成干扰的设备
3. Make sure your station meets the standards of good amateur practice 确保你的电台符合良好业余训练的标准
4. All these choices are correct 所有这些选择都是正确的

T7B09. What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission? 解决业余无线电传输引起的非光纤有线电视干扰的第一步应该是什么？

1. Add a low-pass filter to the TV antenna input 为电视天线输入添加低通滤波器
2. Add a high-pass filter to the TV antenna input 为电视天线输入添加高通滤波器
3. Add a preamplifier to the TV antenna input 将前置放大器添加到电视天线输入
4. Be sure all TV feed line coaxial connectors are installed properly 确保所有电视馈线同轴连接器安装正确

T7B10. What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible? 如果您收到通过调频中继器发送的音频信号失真或无法理解的报告，可能会出现什么问题？

1. Your transmitter is slightly off frequency 您的发射机频率有点偏离
2. You are speaking too loudly or too close to the microphone 你说话声音太大或离麦克风太近
3. You are in a bad location 你的位置不好
4. All these choices are correct 所有这些选择都是正确的

T7B11. Which of the following can eliminate distorted voice transmissions? 以下哪一项可以消除失真的语音传输？

1. Adding extra feedline to the antenna to lower SWR 在天线上添加额外的馈线以降低SWR
2. Turning the radio on and off to reset the computer-controlled circuitry 打开和关闭收音机以重置计算机控制的电路
3. Adding a clip-on ferrite “choke” to the microphone cable to prevent the transmitted signal from feeding back into the transmitter 在麦克风电缆上添加夹式铁氧体“扼流圈”，以防止传输的信号反馈到发射器中
4. Turning the squelch control fully clockwise to prevent the transmitted signal from triggering the squelch circuit 顺时针完全转动静噪控制，以防止传输的信号触发静噪电路

T7C01. What is the primary purpose of a dummy load? 虚拟负载的主要用途是什么？

1. To prevent transmitting signals over the air when making tests 在进行测试时防止通过空中传输信号
2. To prevent over-modulation of a transmitter 防止发射机过度调制
3. To improve the efficiency of an antenna 提高天线的效率
4. To improve the signal-to-noise ratio of a receiver 提高接收机的信噪比

T7C02. Which of the following is used to determine if an antenna is resonant at the desired operating frequency? 以下哪项用于确定天线是否在所需的工作频率下谐振？

1. A VTVM VTVM
2. An antenna analyzer 天线分析仪
3. A Q meter Q计
4. A frequency counter 频率计数器

T7C03. What does a typical RF dummy load consist of? 典型的射频虚拟负载由什么组成？

1. A low-voltage power supply and an AC relay 低压电源和交流继电器
2. A 50-ohm non-inductive resistor mounted on a heat sink 安装在散热器上的50欧姆无感电阻器
3. A low-voltage power supply and a DC relay 一个低压电源和一个直流继电器
4. A 50-ohm inductive reactance mounted in a shielded enclosure 安装在屏蔽外壳中的50欧姆电感性电抗

T7C04. What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line? SWR表上的读数表明天线和馈线之间的阻抗匹配完美？

1. 50:50
2. Zero 零
3. 1:1
4. Full Scale 满刻度

T7C05. Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level? 为什么大多数固态发射机在SWR增加超过一定水平时会降低输出功率？

1. To protect the RF output amplifier transistors 保护射频输出放大器晶体管
2. To comply with FCC rules on spectral purity 遵守FCC关于光谱纯度的规定
3. Because power supplies cannot supply enough current at high SWR 因为电源无法在高SWR下提供足够的电流
4. To lower the SWR on the transmission line 降低传输线上的SWR

T7C06. What does an SWR reading of 4:1 indicate? SWR读数4:1表示什么？

1. Loss of -4 dB 损耗-4 dB
2. Good impedance match 阻抗匹配良好
3. Gain of +4 dB 增益+4 dB
4. Impedance mismatch 阻抗失配

T7C07. What happens to power lost in a feed line? 馈线中的电力损失会发生什么？

1. It increases the SWR 它增加了SWR
2. It is radiated as harmonics 它以谐波形式辐射
3. It is converted into heat 它被转化为热量
4. It distorts the signal 它使信号失真

T7C08. Which instrument can be used to determine SWR? 哪种仪器可以用来确定SWR？

1. Voltmeter 电压表
2. Ohmmeter 欧姆计
3. Iambic pentameter 伊姆比克五音表
4. Directional wattmeter 定向瓦特计

T7C09. Which of the following causes failure of coaxial cables? 以下哪项导致同轴电缆故障？

1. Moisture contamination 湿气污染
2. Solder flux contamination 焊剂污染
3. Rapid fluctuation in transmitter output power 变送器输出功率的快速波动
4. Operation at 100% duty cycle for an extended period 在100%工作循环下长时间运行

T7C10. Why should the outer jacket of coaxial cable be resistant to ultraviolet light? 为什么同轴电缆的外护套要耐紫外线？

1. Ultraviolet light can increase the resistance of the conductors 紫外线会增加导体的电阻
2. Ultraviolet light can increase losses in the cable’s jacket 紫外线会增加电缆护套的损耗
3. Ultraviolet and RF signals can mix, causing interference 紫外线和射频信号可能混合，造成干扰
4. Ultraviolet light can damage the jacket and allow water to enter the cable 紫外线会损坏护套并使水进入电缆

T7C11. What is an advantage of foam-dielectric versus solid-dielectric coaxial cable? 泡沫电介质与固体电介质同轴电缆相比有什么优势？

1. It is more resistant to moisture contamination 它更能抵抗水分污染
2. It has higher voltage breakdown 它具有更高的击穿电压
3. It has less loss per foot 每英尺损失较小
4. It has a better impedance match to 50 ohms 它与50欧姆的阻抗匹配更好

T7D01. Which instrument would you use to measure electric potential? 你会用哪种仪器来测量电势？

1. An ammeter 电流表
2. A voltmeter 电压表
3. A potentiometer 电位计
4. An ohmmeter 欧姆表

T7D02. How is a voltmeter connected to a component to measure applied voltage? 电压表是如何连接到部件上以测量施加的电压的？

1. In series 串联
2. In parallel 并行
3. In quadrature 正交
4. In phase 同相

T7D03. When configured to measure current, how is a multimeter connected to a component? 当配置为测量电流时，万用表是如何连接到部件的？

1. In series 串联
2. In parallel 并行
3. In quadrature 正交
4. In phase 同相

T7D04. Which instrument is used to measure electric current? 哪种仪器用来测量电流？

1. An ohmmeter 欧姆表
2. An electrometer 静电计
3. A voltmeter 电压表
4. An ammeter 电流表

T7D05. How does an ohmmeter measure the resistance of a circuit or component? 欧姆表如何测量电路或组件的电阻？

1. By applying a small current and measuring the resulting voltage 通过施加小电流并测量产生的电压
2. By placing a variable resistor in parallel with the circuit 通过将可变电阻器与电路并联
3. By placing a variable resistor in series with the circuit 通过将可变电阻器与电路串联
4. By applying a variable voltage and measuring the resulting current change 通过施加可变电压并测量由此产生的电流变化

T7D06. Which of the following can damage a multimeter? 下列哪项会损坏万用表？

1. Attempting to measure resistance using the voltage setting 尝试使用电压设置测量电阻
2. Failing to connect one of the probes to ground 未能将其中一个探针接地
3. Attempting to measure voltage when using the resistance setting 使用电阻设置时尝试测量电压
4. Not allowing it to warm up properly 不允许它正常预热

T7D07. Which of the following measurements are made using a multimeter? 以下哪项测量是使用万用表进行的？

1. Signal strength and noise 信号强度和噪声
2. Impedance and reactance 阻抗和电抗
3. Voltage and resistance 电压和电阻
4. All these choices are correct 所有这些选择都是正确的

T7D08. Which of the following types of solder should not be used for radio and electronic applications? 以下哪种类型的焊料不应用于无线电和电子应用？

1. Acid-core solder 酸性芯焊料
2. Lead-tin solder 铅锡焊料
3. Rosin-core solder 松香芯焊料
4. Tin-copper solder 锡铜焊料

T7D09. What is the characteristic appearance of a cold tin-lead solder joint? 冷锡铅焊点的特征外观是什么？

1. Dark black spots 深黑色斑点
2. A bright or shiny surface 明亮或有光泽的表面
3. A rough or lumpy surface 粗糙或凹凸不平的表面
4. A greenish tinge 略带绿色

T7D10. What reading indicates that an ohmmeter is connected across a large, discharged capacitor? 什么读数表明欧姆表连接在一个放电的大电容器上？

1. Increasing resistance with time 阻力随时间增加
2. Decreasing resistance with time 电阻随时间减小
3. Steady full-scale reading 稳定满刻度读数
4. Alternating between open and short circuit 开路和短路之间的交流

T7D11. Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter? 使用欧姆表测量电路内电阻时，应采取以下哪项预防措施？

1. Ensure that the applied voltages are correct 确保施加的电压正确
2. Ensure that the circuit is not powered 确保电路未通电
3. Ensure that the circuit is grounded 确保电路接地
4. Ensure that the circuit is operating at the correct frequency 确保电路在正确的频率下工作

T8A01. Which of the following is a form of amplitude modulation? 以下哪项是调幅的一种形式？

1. Spread spectrum 扩频
2. Packet radio 分组无线电
3. Single sideband 单边带
4. Phase shift keying (PSK) 相移键控（PSK）

T8A02. What type of modulation is commonly used for VHF packet radio transmissions? 甚高频分组无线电传输通常使用哪种类型的调制？

1. FM or PM FM或PM
2. SSB 单边带话
3. AM 上午
4. PSK 相移键控

T8A03. Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands? 甚高频和超高频频带上的远距离（弱信号）联系人经常使用哪种类型的语音模式？

1. FM 调频
2. DRM 数字版权管理
3. SSB 单边带话
4. PM 下午

T8A04. Which type of modulation is commonly used for VHF and UHF voice repeaters? 甚高频和超高频语音中继器通常使用哪种类型的调制？

1. AM 上午
2. SSB 单边带话
3. PSK 相移键控
4. FM or PM FM或PM

T8A05. Which of the following signal types has the narrowest bandwidth? 以下哪种信号类型的带宽最窄？

1. FM voice 调频语音
2. SSB voice SSB语音
3. CW 连续波
4. Slow-scan TV 慢速扫描电视

T8A06. Which sideband is normally used for 10-meter HF, VHF, and UHF single-sideband communications? 哪条边带通常用于10米HF、VHF和UHF单边带通信？

1. Upper sideband 上边带
2. Lower sideband 下边带
3. Suppressed sideband 抑制边带
4. Inverted sideband 倒置边带

T8A07. What is one characteristic of single sideband (SSB) compared to FM? 与调频相比，单边带（SSB）的一个特征是什么？

1. SSB signals are easier to tune in correctly SSB信号更容易正确调谐
2. SSB signals are less susceptible to interference SSB信号不太容易受到干扰
3. SSB signals have narrower bandwidth SSB信号的带宽较窄
4. SSB signals are less susceptible to high SWR SSB信号对高SWR不太敏感

T8A08. What is the approximate bandwidth of a typical single sideband (SSB) voice signal? 典型的单边带（SSB）语音信号的近似带宽是多少？

1. 1 kHz 1千赫
2. 3 kHz 3千赫
3. 6 kHz 6千赫
4. 15 kHz 15千赫

T8A09. What is the approximate bandwidth of an FM voice signal on VHF repeaters? 甚高频中继器上FM语音信号的大致带宽是多少？

1. Less than 500 Hz 小于500 Hz
2. About 150 kHz 约150 kHz
3. Between 10 and 15 kHz 介于10和15 kHz之间
4. Between 50 and 125 kHz 介于50和125 kHz之间

T8A10. What is the approximate bandwidth of AM fast-scan TV transmissions? AM快速扫描电视传输的大致带宽是多少？

1. More than 10 MHz 超过10 MHz
2. About 6 MHz 约6 MHz
3. About 3 MHz 约3 MHz
4. About 1 MHz 约1 MHz

T8A11. What is the approximate bandwidth required to transmit a CW signal? 发射CW信号所需的大致带宽是多少？

1. 2.4 kHz 2.4千赫
2. 150 Hz 150赫兹
3. 1000 Hz 1000赫兹
4. 15 kHz 15千赫

T8A12. Which of the following is a disadvantage of FM compared with single sideband? 与单边带相比，以下哪一项是调频的缺点？

1. Voice quality is poorer 音质较差
2. Only one signal can be received at a time 一次只能接收一个信号
3. FM signals are harder to tune 调频信号更难调谐
4. FM signals are more susceptible to high SWR FM信号更容易受到高SWR的影响

T8B01. What telemetry information is typically transmitted by satellite beacons? 卫星信标通常传输哪些遥测信息？

1. The signal strength of received signals 接收信号的信号强度
2. Time of day accurate to plus or minus 1/10 second 精确到±1/10秒的一天中的时间
3. Health and status of the satellite 卫星的健康状况
4. All these choices are correct 所有这些选择都是正确的

T8B02. What is the impact of using excessive effective radiated power on a satellite uplink? 对卫星上行链路使用过多的有效辐射功率会产生什么影响？

1. Possibility of commanding the satellite to an improper mode 命令卫星进入不正确模式的可能性
2. Blocking access by other users 阻止其他用户访问
3. Overloading the satellite batteries 卫星电池过载
4. Possibility of rebooting the satellite control computer 重新启动卫星控制计算机的可能性

T8B03. Which of the following are provided by satellite tracking programs? 以下哪些是由卫星跟踪程序提供的？

1. Maps showing the real-time position of the satellite track over Earth 显示卫星轨道在地球上的实时位置的地图
2. The time, azimuth, and elevation of the start, maximum altitude, and end of a pass 行程开始、最大高度和结束的时间、方位角和高程
3. The apparent frequency of the satellite transmission, including effects of Doppler shift 卫星传输的视在频率，包括多普勒频移的影响
4. All these choices are correct 所有这些选择都是正确的

T8B04. What mode of transmission is commonly used by amateur radio satellites? 业余无线电卫星通常使用什么传输模式？

1. SSB 单边带话
2. FM 调频
3. CW/data CW/数据
4. All these choices are correct 所有这些选择都是正确的

T8B05. What is a satellite beacon? 什么是卫星信标？

1. The primary transmit antenna on the satellite 卫星上的主发射天线
2. An indicator light that shows where to point your antenna 指示灯，指示天线指向何处
3. A reflective surface on the satellite 卫星上的反射面
4. A transmission from a satellite that contains status information 包含状态信息的卫星传输

T8B06. Which of the following are inputs to a satellite tracking program? 以下哪项是卫星跟踪程序的输入？

1. The satellite transmitted power 卫星发射功率
2. The Keplerian elements 开普勒元素
3. The last observed time of zero Doppler shift 最后观测到的零多普勒频移时间
4. All these choices are correct 所有这些选择都是正确的

T8B07. What is Doppler shift in reference to satellite communications? 关于卫星通信，多普勒频移是什么？

1. A change in the satellite orbit 卫星轨道的变化
2. A mode where the satellite receives signals on one band and transmits on another 卫星在一个频段接收信号，在另一个频段发送信号的一种模式
3. An observed change in signal frequency caused by relative motion between the satellite and Earth station 观测到的由卫星和地球站之间的相对运动引起的信号频率变化
4. A special digital communications mode for some satellites 一些卫星的一种特殊数字通信模式

T8B08. What does it mean if a satellite is operating in U/V mode? 如果卫星以U/V模式运行，这意味着什么？

1. The satellite uplink is in the 15-meter band and the downlink is in the 10-meter band 卫星上行链路在15米波段，下行链路在10米波段
2. The satellite uplink is in the 70-centimeter band and the downlink is in the 2-meter band 卫星上行链路在70厘米波段，下行链路在2米波段
3. The satellite operates using ultraviolet frequencies 该卫星使用紫外线频率运行
4. The satellite frequencies are usually variable 卫星频率通常是可变的

T8B09. What causes spin fading of satellite signals? 是什么导致卫星信号的自旋衰落？

1. Circular polarized noise interference radiated from the sun 太阳辐射的圆偏振噪声干扰
2. Rotation of the satellite and its antennas 卫星及其天线的旋转
3. Doppler shift of the received signal 接收信号的多普勒频移
4. Interfering signals within the satellite uplink band 卫星上行链路频带内的干扰信号

T8B10. What does the term LEO mean in reference to communication satellites? LEO一词在通信卫星方面是什么意思？

1. Low Energy Orbit, which conserves battery power 低能耗轨道，节省电池电量
2. Low Elevation Orbit, which appears close to the horizon from the earth station 低仰角轨道，从地球站看，它靠近地平线
3. Low Equilibrium Orbit, which has a slightly unstable period 低平衡轨道，周期稍不稳定
4. Low Earth Orbit, which has a period of around 100 minutes 低地球轨道，周期约为100分钟

T8B11. Who is permitted to receive telemetry from an amateur radio satellite? 谁可以接收业余无线电卫星的遥测数据？

1. Anyone 任何人
2. Only the satellite control operator 只有卫星控制操作员
3. Only the control operator or a licensed radio amateur who has received the encryption key from the control operator 只有从控制操作员处收到加密密钥的控制操作员或持有执照的业余无线电爱好者
4. Only a licensed radio amateur who has received the encryption key from AMSAT 只有获得AMSAT加密密钥的持证业余无线电爱好者

T8B12. Which of the following is a way to determine whether your satellite uplink power into a linear transponder satellite is neither too low nor too high? 以下哪一项是确定进入线性转发器卫星的卫星上行链路功率是否既不太低也不太高的方法？

1. Check your signal strength report in the telemetry data 检查遥测数据中的信号强度报告
2. Listen for distortion on your downlink signal 监听下行信号是否失真
3. Your signal strength on the downlink should be about the same as the beacon 下行链路上的信号强度应该与信标大致相同
4. Compare your signal to others on the downlink using an internet SDR receiver 使用互联网SDR接收器将您的信号与下行链路上的其他信号进行比较

T8C01. Which of the following methods is used to locate sources of noise interference or jamming? 以下哪种方法用于定位噪声干扰或干扰源？

1. Echolocation 回声定位
2. Doppler radar 多普勒雷达
3. Radio direction finding 无线电测向
4. Phase locking 相位锁定

T8C02. Which of these items would be useful for a hidden transmitter hunt? 这些物品中的哪一个对隐藏的发射机搜寻有用？

1. Calibrated SWR meter 校准SWR表
2. A directional antenna 定向天线
3. A directional wattmeter 定向瓦特计
4. All these choices are correct 所有这些选择都是正确的

T8C03. What operating activity involves contacting as many stations as possible during a specified period? 哪些操作活动涉及在指定时间内联系尽可能多的工作站？

1. Simulated emergency exercises 模拟应急演习
2. Net operations 净运营
3. Hidden transmitter hunts 隐藏发射器狩猎
4. Contesting 竞争

T8C04. Which of the following is good practice when contacting another station in a contest? 在比赛中联系其他电台时，以下哪一项是好的做法？

1. Signing only the last two letters of your call if there are many other stations calling 如果有许多其他电台在打电话，只签署通话的最后两封信
2. Contacting the station twice to be sure that you are in his log 联系电台两次，以确保你在他的日志中
3. Sending only the minimum information needed for proper identification and the contest exchange 仅发送正确识别和比赛交流所需的最低信息
4. Adding “Please copy” before your exchange 在兑换前添加“请复制”

T8C05. What is a grid locator? 什么是栅格定位器？

1. A letter-number designator assigned to a geographic location 指定给地理位置的字母数字指示符
2. A letter-number designator assigned to an azimuth and elevation 指定给方位角和仰角的字母数字指示符
3. An instrument for locating faults in power amplifiers 功率放大器故障定位仪
4. An instrument for radio direction finding 无线电测向仪

T8C06. How is over the air access to Internet Radio Linking Project (IRLP) nodes accomplished? 如何实现对互联网无线电链接项目（IRLP）节点的空中访问？

1. By obtaining a password that is sent via voice to the node 通过获取通过语音发送到节点的密码
2. By using Dual-Tone Multi-Frequency (DTMF) signals 通过使用双音多频（DTMF）信号
3. By entering the proper internet password 通过输入正确的互联网密码
4. By using Continuous Tone-Coded Squelch System (CTCSS) tone codes 通过使用连续音调编码静噪系统（CTCSS）音调编码

T8C07. What is Voice Over Internet Protocol (VoIP)? 什么是网络语音（VoIP）？

1. A set of rules specifying how to identify your station when linked over the internet to another station 一组规则，指定当通过互联网链接到另一个电台时如何识别您的电台
2. A technique employed to “spot” DX stations via the internet 一种通过互联网“发现”DX电台的技术
3. A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet 一种使用通过互联网监控的远程站点测量发射机调制质量的技术
4. A method of delivering voice communications over the internet using digital techniques 一种使用数字技术在互联网上传输语音通信的方法

T8C08. What is the Internet Radio Linking Project (IRLP)? 什么是互联网无线电连接项目（IRLP）？

1. A technique to connect amateur radio systems, such as repeaters, via the internet 一种通过互联网连接业余无线电系统（如中继器）的技术
2. A system for providing access to websites via amateur radio 一种通过业余无线电访问网站的系统
3. A system for informing amateurs in real time of the frequency of active DX stations 一种实时通知业余爱好者活动DX电台频率的系统
4. A technique for measuring signal strength of an amateur transmitter via the internet 一种通过互联网测量业余发射机信号强度的技术

T8C09. Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission? 以下哪种协议使业余电台能够在不使用无线电启动传输的情况下通过中继器进行传输？

1. IRLP
2. D-STAR D星
3. DMR 数字移动无线电
4. EchoLink 回声链接

T8C10. What is required before using the EchoLink system? 使用EchoLink系统之前需要什么？

1. Complete the required EchoLink training 完成所需的EchoLink培训
2. Purchase a license to use the EchoLink software 购买使用EchoLink软件的许可证
3. Register your call sign and provide proof of license 注册呼号并提供许可证证明
4. At least a General Class license 至少持有普通类许可证

T8C11. What is an amateur radio station that connects other amateur stations to the internet? 什么是将其他业余电台连接到互联网的业余电台？

1. A gateway 网关
2. A repeater 中继器
3. A digipeater digipeater
4. A beacon 灯塔

T8D01. Which of the following is a digital communications mode? 以下哪种是数字通信模式？

1. Packet radio 分组无线电
2. IEEE 802.11 ieee802.11
3. FT8 英尺8
4. All these choices are correct 所有这些选择都是正确的

T8D02. What is FT8? 什么是FT8？

1. A wideband FM voice mode 宽带调频语音模式
2. A digital mode capable of low signal-to-noise operation 一种能够进行低信噪比操作的数字模式
3. An eight-channel multiplex mode for FM repeaters 调频中继器的八信道复用模式
4. A digital slow-scan TV mode with forward error correction and automatic color compensation 一种具有前向纠错和自动色彩补偿的数字慢扫描电视模式

T8D03. What kind of data can be transmitted by APRS? APRS可以传输什么样的数据？

1. GPS position data GPS位置数据
2. Text messages 短信
3. Weather data 天气数据
4. All these choices are correct 所有这些选择都是正确的

T8D04. What is meant by the term "NTSC?" “NTSC”是什么意思

1. A digital transmission standard for encrypting data 一种用于加密数据的数字传输标准
2. A special mode for satellite uplink 卫星上行链路的一种特殊模式
3. An analog fast-scan color TV signal 模拟快速扫描彩色电视信号
4. A frame compression scheme for TV signals 一种电视信号的帧压缩方案

T8D05. Which of the following is an application of APRS? 以下哪项是APRS的应用？

1. Providing real-time tactical digital communications in conjunction with a map showing the locations of stations 与显示台站位置的地图一起提供实时战术数字通信
2. Automatically showing the number of packets transmitted via PACTOR during a specific time interval 自动显示在特定时间间隔内通过PACTOR传输的数据包数量
3. Providing voice over internet connection between repeaters 在中继器之间提供互联网语音连接
4. Providing information on the number of stations signed into a repeater 提供与中继器签约的站点数量有关的信息

T8D06. What does the abbreviation "PSK" mean? 缩写“PSK”是什么意思？

1. Pulse Shift Keying 脉冲移位键控
2. Phase Shift Keying 相移键控
3. Packet Sampled Keying 数据包采样密钥
4. Power Sampled Keying 电源采样键控

T8D07. Which of the following describes DMR? 以下哪项描述DMR？

1. A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel 一种在单个12.5kHz中继器信道上对两个数字语音信号进行时间复用的技术
2. An automatic position tracking mode for FM mobiles communicating through repeaters 一种用于调频手机通过中继器通信的自动位置跟踪模式
3. An automatic computer logging technique for hands-off logging when communicating while operating a vehicle 一种计算机自动记录技术，用于在操作车辆时进行通信时进行手动记录
4. A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction 一种同时在两个中继器输入端进行传输的数字技术，用于自动纠错

T8D08. Which of the following is included in packet radio transmissions? 以下哪项包含在分组无线电传输中？

1. A checksum that permits error detection 允许错误检测的校验和
2. A header that contains the call sign of the station to which the information is being sent 一种标头，包含信息发送到的电台的呼号
3. Automatic repeat request in case of error 出现错误时自动重复请求
4. All these choices are correct 所有这些选择都是正确的

T8D09. What is CW? 什么是CW？

1. A type of electromagnetic propagation 一种电磁传播
2. A digital mode used primarily on 2-meter FM 主要用于2米调频的数字模式
3. Error correction for digital transmission using code words 使用码字进行数字传输的纠错
4. Another name for a Morse code transmission 莫尔斯电码传输的另一个名称

T8D10. Which of the following operating activities is supported by digital mode software in the WSJT-X software suite? WSJT-X软件套件中的数字模式软件支持以下哪项操作活动？

1. Earth-Moon-Earth 地球月球地球
2. Weak signal propagation beacons 弱信号传播信标
3. Meteor scatter 流星散射
4. All these choices are correct 所有这些选择都是正确的

T8D11. What is the role of ARQ in a transmission system? ARQ在传输系统中的作用是什么？

1. A special transmission format limited to video signals 一种仅限于视频信号的特殊传输格式
2. A system used to encrypt command signals to an amateur radio satellite 一种用于加密发送给业余无线电卫星的命令信号的系统
3. An error correction method in which the receiving station detects errors and sends a request for retransmission 一种纠错方法，其中接收站检测错误并发送重发请求
4. A method of compressing data using autonomous reiterative Q codes prior to final encoding 一种在最终编码前使用自主重复Q码压缩数据的方法

T8D12. Which of the following best describes an amateur radio mesh network? 以下哪项最能描述业余无线电网状网络？

1. An amateur-radio data network using commercial Wi-Fi equipment with modified firmware 使用经过修改的固件的商用Wi-Fi设备的业余无线电数据网络
2. A wide-bandwidth digital voice mode employing DMR protocols 一种采用DMR协议的宽带数字语音模式
3. An amateur-radio satellite communications network using modified commercial satellite TV hardware 使用改进的商用卫星电视硬件的业余无线电卫星通信网络
4. An internet linking protocol allowing communication through repeaters around the world 一种互联网连接协议，允许通过世界各地的中继器进行通信

T8D13. What is FT8? 什么是FT8？

1. A wideband FM voice mode 宽带调频语音模式
2. A digital mode capable of low signal-to-noise operation 一种能够进行低信噪比操作的数字模式
3. An eight channel multiplex mode for FM repeaters 一种用于调频中继器的八通道多路复用模式
4. A digital slow-scan TV mode with forward error correction and automatic color compensation 具有前向纠错和自动色彩补偿功能的数字慢扫描电视模式

T9A01. What is a beam antenna? 什么是波束天线？

1. An antenna built from square aluminum beams 由方形铝梁制成的天线
2. An omnidirectional antenna invented by Clarence Beam Clarence Beam发明的全向天线
3. An antenna that concentrates signals in one direction 将信号集中在一个方向的天线
4. An antenna that focuses the signal into two intense rays 将信号聚焦成两条强射线的天线

T9A02. Which of the following describes a type of antenna loading? 以下哪项描述了一种类型的天线负载？

1. Electrically lengthening by inserting inductors in radiating elements 通过在辐射元件中插入电感器实现电加长
2. Inserting a resistor in the radiating portion of the antenna to make it resonant 在天线的辐射部分插入电阻器使其谐振
3. Installing a spring in the base of a mobile vertical antenna to make it more flexible 在移动垂直天线的底座上安装弹簧，使其更灵活
4. Strengthening the radiating elements of a beam antenna to better resist wind damage 加强波束天线的辐射元件以更好地抵御风的破坏

T9A03. How is the polarization of an antenna described? 如何描述天线的极化？

1. By the shape of the driven element 根据从动元件的形状
2. By the orientation of the electric field 根据电场的方向
3. By the orientation of the magnetic field 根据磁场的方向
4. By the direction of radiation 根据辐射方向

T9A04. What is a disadvantage of a handheld radio transceiver’s short flexible antenna compared to a full-sized quarter-wave antenna? 与全尺寸四分之一波长天线相比，手持无线电收发器的短柔性天线有什么缺点？

1. It has low efficiency 它的效率很低
2. It transmits only circularly polarized signals 它只传输圆极化信号
3. It is more susceptible to receiver desensitization 它更容易受到接收器脱敏的影响
4. It only works on analog signals, not digital ones 它只适用于模拟信号，不适用于数字信号

T9A05. Which of the following increases the resonant frequency of a dipole antenna? 以下哪项可以提高偶极天线的谐振频率？

1. Lengthening it 加长
2. Inserting coils in series with radiating wires 将线圈与辐射线串联插入
3. Shortening it 缩短
4. Adding capacitive loading to the ends of the radiating wires 将电容负载添加到辐射线的末端

T9A06. Which of the following types of antennas offers the greatest gain? 以下哪种天线的增益最大？

1. 5/8 wave vertical 垂直5/8波
2. Isotropic 各向同性
3. J pole J极
4. Yagi 八木

T9A07. What is a potential drawback of using a handheld VHF transceiver inside a vehicle that lacks an externally mounted antenna? 在没有外部安装天线的车辆内使用手持式甚高频收发器的潜在缺点是什么？

1. Signal strength is reduced due to the shielding effect of the vehicle 由于车辆的屏蔽作用，信号强度降低
2. The bandwidth of the antenna will decrease, increasing SWR 天线的带宽将减小，SWR增加
3. The SWR might decrease, decreasing the signal strength SWR可能会降低，从而降低信号强度
4. The handheld will overheat due to reflected power in the vehicle 由于车辆中的反射电源，手持设备将过热

T9A08. Why is a 19-inch-long vertical antenna often used on 2 meters? 为什么19英寸长的垂直天线经常在2米的距离上使用？

1. It has high gain 它具有很高的增益
2. It is a resonant half-wave 这是一个共振的半波
3. It is a resonant quarter-wave 这是一个共振的四分之一波长
4. It has low RF radiation exposure 它具有低射频辐射暴露

T9A09. What is an advantage of a 5/8-wavelength whip antenna for VHF or UHF mobile service compared to a 1/4-wave antenna? 与1/4波天线相比，5/8波长鞭状天线在VHF或UHF移动服务中的优势是什么？

1. It has more gain 它有更多的收益
2. It radiates at a higher angle 它以更高的角度辐射
3. It has lower SWR 其SWR较低
4. It has lower impedance 它的阻抗较低

T9A10. In which direction does a half-wave dipole antenna radiate the strongest signal? 半波偶极天线向哪个方向辐射最强的信号？

1. Equally in all directions 在所有方向上均相同
2. Off the ends of the antenna 离开天线末端
3. In the direction of the feed line 沿馈线方向
4. Broadside to the antenna 天线外侧

T9A11. What is antenna gain? 什么是天线增益？

1. The additional power that is added to the transmitter power 添加到发射机功率的附加功率
2. The additional power that is required in the antenna when transmitting on a higher frequency 在较高频率上发射时天线所需的额外功率
3. The increase in signal strength in a specified direction compared to a reference antenna 与参考天线相比，指定方向上的信号强度增加
4. The increase in impedance on receive or transmit compared to a reference antenna 与参考天线相比，接收或发射阻抗的增加

T9A12. What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service? 适用于VHF或UHF移动服务的5/8波长鞭状天线的优势是什么？

1. It has more gain than a 1/4-wavelength antenna 它的增益比1/4波长的天线大
2. It radiates at a very high angle 它以很高的角度辐射
3. It eliminates distortion caused by reflected signals 它消除了反射信号引起的失真
4. It has 10 times the power gain of a 1/4 wavelength whip 它的功率增益是1/4波长鞭状物的10倍

T9B01. Which of the following connectors should be carefully taped for weather protection when used outdoors? 在户外使用时，应小心地用胶带固定以下哪些连接器以防风雨？

1. PL259
2. BNC 英国国家语料库
3. Type N N型
4. All these choices are correct 所有这些选择都是正确的

T9B02. What is the most common impedance of coaxial cables used in amateur radio? 业余无线电中使用的同轴电缆最常见的阻抗是多少？

1. 8 ohms 8欧姆
2. 50 ohms 50欧姆
3. 600 ohms 600欧姆
4. 12 ohms 12欧姆

T9B03. Why is coaxial cable the most common feed line for amateur radio antenna systems? 为什么同轴电缆是业余无线电天线系统中最常见的馈线？

1. It is easy to use and requires few special installation considerations 它易于使用，几乎不需要特殊的安装注意事项
2. It has less loss than any other type of feed line 它的损耗比任何其他类型的馈线都小
3. It can handle more power than any other type of feed line 它可以处理比任何其他类型的馈线更多的功率
4. It is less expensive than any other type of feed line 它比任何其他类型的馈线都便宜

T9B04. What is the major function of an antenna tuner (antenna coupler)? 天线调谐器（天线耦合器）的主要功能是什么？

1. It matches the antenna system impedance to the transceiver's output impedance 它将天线系统阻抗与收发器的输出阻抗相匹配
2. It helps a receiver automatically tune in weak stations 它有助于接收器在弱电台中自动调谐
3. It allows an antenna to be used on both transmit and receive 它允许天线同时用于发射和接收
4. It automatically selects the proper antenna for the frequency band being used 它会自动为所使用的频带选择合适的天线

T9B05. What happens as the frequency of a signal in coaxial cable is increased? 当同轴电缆中信号的频率增加时会发生什么？

1. The characteristic impedance decreases 特性阻抗降低
2. The loss decreases 损失减少
3. The characteristic impedance increases 特性阻抗增加
4. The loss increases 损失增加

T9B06. Which of the following connector types is most suitable as an RF connector for frequencies above 400 MHz? 以下哪种连接器类型最适合作为频率高于400 MHz的射频连接器？

1. PL-259
2. Type N N型
3. RS-213
4. DB-25

T9B07. Which of the following is true of PL-259 type coax connectors? 以下哪项适用于PL-259型同轴电缆连接器？

1. They are preferred for microwave operation 它们是微波操作的首选
2. They are watertight 它们是防水的
3. They are commonly used at HF and VHF frequencies 它们通常用于HF和VHF频率
4. They are a bayonet-type connector 它们是卡口式连接器

T9B08. Which of the following is a source of loss in coaxial feed line? 以下哪项是同轴馈线的损耗源？

1. Water intrusion into coaxial connectors 同轴连接器进水
2. High SWR SWR高
3. Multiple connectors in the line 线路中有多个连接器
4. All these choices are correct 所有这些选择都是正确的

T9B09. What can cause erratic changes in SWR? 什么会导致SWR的不稳定变化？

1. Local thunderstorm 局部雷雨
2. Loose connection in the antenna or feed line 天线或馈线连接松动
3. Over-modulation 过调制
4. Overload from a strong local station 强大的本地站过载

T9B10. What is the electrical difference between RG-58 and RG-213 coaxial cable? RG-58和RG-213同轴电缆的电气区别是什么？

1. There is no significant difference between the two types 这两种类型之间没有显著差异
2. RG-58 cable has two shields RG-58电缆有两个屏蔽
3. RG-213 cable has less loss at a given frequency RG-213电缆在给定频率下损耗较小
4. RG-58 cable can handle higher power levels RG-58电缆可以处理更高的功率水平

T9B11. Which of the following types of feed line has the lowest loss? 以下哪种类型的馈线损耗最低？

1. 50-ohm flexible coax 50欧姆柔性同轴电缆
2. Multi-conductor unbalanced cable 多导体不平衡电缆
3. Air-insulated hardline 空气绝缘硬质合金
4. 75-ohm flexible coax 75欧姆柔性同轴电缆

T9B12. What is standing wave ratio (SWR)? 驻波比是多少？

1. A measure of how well a load is matched to a transmission line 衡量负载与输电线路匹配程度的指标
2. The ratio of amplifier power output to input 放大器功率输出与输入的比率
3. The transmitter efficiency ratio 变送器效率比
4. An indication of the quality of your station’s ground connection 指示电台接地质量

T0A01. Which of the following is a safety hazard of a 12-volt storage battery that lacks internal protection circuitry? 以下哪一项是缺乏内部保护电路的12伏蓄电池的安全隐患？

1. Touching both terminals with your hands can cause electrical shock 用手触摸两个端子可能会导致触电
2. Shorting the terminals can cause burns, fire, or an explosion 端子短路可能导致烧伤、火灾或爆炸
3. RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas 附近发射器的射频发射会导致电解液释放有毒气体
4. All these choices are correct 所有这些选择都是正确的

T0A02. What health hazard is posed by electrical current flowing through the body? 电流流过身体会对健康造成什么危害？

1. It may cause injury by heating body tissue 它可能会因加热身体组织而造成伤害
2. It may disrupt the electrical functions of cells 它可能会破坏细胞的电功能
3. It may cause involuntary muscle contractions 它可能导致不自主的肌肉收缩
4. All these choices are correct 所有这些选择都是正确的

T0A03. In the United States, what circuit does black wire insulation indicate in a three-wire 120 V AC cable? 在美国，三线120V交流电缆中的黑线绝缘表示什么电路？

1. Neutral 中性线
2. Hot 火线
3. Equipment ground 设备接地线
4. Negative 负面的

T0A04. What is the purpose of a fuse in an electrical circuit? 电路中保险丝的用途是什么？

1. To prevent power supply ripple from damaging a component 防止电源纹波损坏组件
2. To remove power in case of an overload 过载时切断电源
3. To limit current and prevent shocks 限制电流并防止冲击
4. All these choices are correct 所有这些选择都是正确的

T0A05. Why should a 5-ampere fuse never be replaced with a 20-ampere fuse? 为什么5安培的保险丝永远不能用20安培的保险丝代替？

1. The larger fuse would be likely to blow because it is rated for higher current 较大的保险丝可能会熔断，因为它的额定电流更高
2. The power supply ripple would greatly increase 电源纹波将大大增加
3. Excessive current could cause a fire 电流过大可能引发火灾
4. Voltage drop in the higher current fuse could result in excessively low voltage to the device 高电流保险丝中的电压降可能会导致设备电压过低

T0A06. What is a good way to guard against electrical shock at your station? 在你的电台防止触电的好方法是什么？

1. Use three-wire cords and plugs for all AC powered equipment 所有交流供电设备使用三根电线和插头
2. Connect all AC powered station equipment to a common safety ground 将所有交流电站设备连接到公共安全接地
3. Ensure all capacitors used for high-voltage DC are fully discharged before working inside equipment 在设备内部工作之前，确保所有用于高压直流的电容器都已完全放电
4. All these choices are correct 所有这些选择都是正确的

T0A07. Where should a lightning arrester be installed in a coaxial feed line? 避雷器应安装在同轴馈线的何处？

1. At the output connector of a transceiver 在收发器的输出连接器处
2. At the antenna feed point 在天线馈电点
3. At the AC power service panel 在交流电源服务面板上
4. On a grounded panel near where feed lines enter the building 在馈线进入建筑物附近的接地面板上

T0A08. Where should a fuse or circuit breaker be installed in a 120V AC power circuit? 120V交流电源电路中应在何处安装保险丝或断路器？

1. In series with the hot conductor only 仅与热导体串联
2. In series with the hot and neutral conductors 与火线和中性线串联
3. In parallel with the hot conductor only 仅与热导体并联
4. In parallel with the hot and neutral conductors 与火线和中性线平行

T0A09. What should be done to all external ground rods or earth connections? 应如何处理所有外部接地棒或接地连接？

1. Waterproof them with silicone caulk or electrical tape 用硅胶填缝料或电工胶带防水
2. Keep them as far apart as possible 让它们尽可能远离
3. Bond them together with heavy wire or conductive strap 用粗线或导电带将它们粘合在一起
4. Tune them for resonance on the lowest frequency of operation 在最低操作频率下对其进行调谐以获得谐振

T0A10. What hazard exists when rapidly charging or discharging an unprotected battery? 快速给未受保护的电池充电或放电时存在什么危险？

1. Overheating or out-gassing 过热或排气不足
2. Excess output ripple 输出纹波过大
3. Electric shock 触电
4. Overvoltage 过电压

T0A11. What hazard exists in a power supply immediately after turning it off? 关机后突然断电会存在什么危险？

1. Circulating currents in the dc filter 直流滤波器中的循环电流
2. Leakage flux in the power transformer 电力变压器中的漏磁通
3. Voltage transients from kickback diodes 反冲二极管产生的电压瞬变
4. Charge stored in filter capacitors 存储在滤波电容器中的电荷

T0A12. Which of the following precautions should be taken when measuring high voltages with a voltmeter? 使用电压表测量高压时，应采取以下哪项预防措施？

1. Ensure that the voltmeter has very low impedance 确保电压表的阻抗非常低
2. Ensure that the voltmeter and its leads are rated for use at the voltages being measured 确保电压表及其引线的额定值适用于被测电压
3. Ensure that the circuit is grounded through the voltmeter 确保电路通过电压表接地
4. Ensure that the voltmeter is set to the correct frequency 确保电压表设置为正确的频率

T0B01. Which of the following is good practice when installing ground wires on a tower for lightning protection? 在塔架上安装避雷地线时，以下哪项是良好的做法？

1. Put a drip loop in the ground connection to prevent water damage to the ground system 在接地连接中放置滴水环，以防止水损坏接地系统
2. Make sure all ground wire bends are right angles 确保所有地线弯曲都是直角
3. Ensure that connections are short and direct 确保连接短且直接
4. All these choices are correct 所有这些选择都是正确的

T0B02. What is required when climbing an antenna tower? 攀登天线塔时需要什么？

1. Have sufficient training on safe tower climbing techniques 对安全爬塔技术进行充分培训
2. Use appropriate tie-off to the tower at all times 在任何时候都要使用适当的系紧装置
3. Always wear an approved climbing harness 始终佩戴经批准的攀爬安全带
4. All these choices are correct 所有这些选择都是正确的

T0B03. Under what circumstances is it safe to climb a tower without a helper or observer? 在什么情况下，在没有助手或观察员的情况下攀登塔是安全的？

1. When no electrical work is being performed 当没有进行电气工作时
2. When no mechanical work is being performed 当没有进行机械作业时
3. When the work being done is not more than 20 feet above the ground 当正在进行的工作离地面不超过20英尺时
4. Never 从不

T0B04. Which of the following is an important safety precaution to observe when putting up an antenna tower? 架设天线塔时，以下哪项是重要的安全预防措施？

1. Wear a ground strap connected to your wrist at all times 始终佩戴与手腕相连的接地带
2. Insulate the base of the tower to avoid lightning strikes 对塔基进行绝缘以避免雷击
3. Look for and stay clear of any overhead electrical wires 寻找并远离任何架空电线
4. All these choices are correct 所有这些选择都是正确的

T0B05. What is the purpose of a safety wire through a turnbuckle used to tension guy lines? 穿过用于拉紧拉线的螺丝扣的安全线的用途是什么？

1. Secure the guy line if the turnbuckle breaks 如果螺丝扣断裂，固定拉线
2. Prevent loosening of the turnbuckle from vibration 防止螺丝扣因振动而松动
3. Provide a ground path for lightning strikes 为雷击提供接地路径
4. Provide an ability to measure for proper tensioning 提供测量适当张紧的能力

T0B06. What is the minimum safe distance from a power line to allow when installing an antenna? 安装天线时，与电源线的最小安全距离是多少？

1. Add the height of the antenna to the height of the power line and multiply by a factor of 1.5 将天线的高度与电源线的高度相加，然后乘以1.5
2. The height of the power line above ground 电源线离地高度
3. 1/2 wavelength at the operating frequency 工作频率下的1/2波长
4. Enough so that if the antenna falls, no part of it can come within 10 feet of the power wires 如果天线掉落，其任何部分都无法进入电源线10英尺范围内

T0B07. Which of the following is an important safety rule to remember when using a crank-up tower? 使用曲柄式塔架时，以下哪项是需要记住的重要安全规则？

1. This type of tower must never be painted 这种类型的塔决不能涂漆
2. This type of tower must never be grounded 此类塔架不得接地
3. This type of tower must not be climbed unless it is retracted, or mechanical safety locking devices have been installed 除非收回或安装了机械安全锁定装置，否则不得攀爬此类塔架
4. All these choices are correct 所有这些选择都是正确的

T0B08. Which is a proper grounding method for a tower? 哪种接地方法适合塔架？

1. A single four-foot ground rod, driven into the ground no more than 12 inches from the base 一根四英尺长的接地棒，深入地面，距离底座不超过12英寸
2. A ferrite-core RF choke connected between the tower and ground 连接在塔架和地面之间的铁氧体磁芯RF扼流圈
3. A connection between the tower base and a cold-water pipe 塔基和冷水管之间的连接
4. Separate eight-foot ground rods for each tower leg, bonded to the tower and each other 每个塔腿单独的八英尺接地棒，连接到塔和彼此

T0B09. Why should you avoid attaching an antenna to a utility pole? 为什么要避免将天线连接到电线杆上？

1. The antenna will not work properly because of induced voltages 由于感应电压，天线将无法正常工作
2. The antenna may unbalance the power transformer, causing power fluctuations 天线可能会使电源变压器不平衡，导致功率波动
3. The antenna could contact high-voltage power lines 天线可能接触高压电线
4. All these choices are correct 所有这些选择都是正确的

T0B10. Which of the following is true when installing grounding conductors used for lightning protection? 在安装用于防雷的接地导体时，以下哪一项是正确的？

1. Use only non-insulated wire 仅使用非绝缘电线
2. Wires must be carefully routed with precise right-angle bends 电线必须小心布线，并采用精确的直角弯头
3. Sharp bends must be avoided 必须避免急转弯
4. Common grounds must be avoided 必须避免共用场地

T0B11. Which of the following establishes grounding requirements for an amateur radio tower or antenna? 以下哪项规定了业余无线电发射塔或天线的接地要求？

1. FCC Part 97 rules FCC第97部分规则
2. Local electrical codes 当地电气规范
3. FAA tower lighting regulations FAA塔台照明规定
4. UL recommended practices UL推荐做法

T0C01. What type of radiation are radio signals? 无线电信号是什么类型的辐射？

1. Gamma radiation 伽马辐射
2. Ionizing radiation 电离辐射
3. Alpha radiation 阿尔法辐射
4. Non-ionizing radiation 非电离辐射

T0C02. Which of the following bands has the lowest maximum permissible exposure for RF safety? 以下哪个频段的射频安全最大允许暴露量最低？

1. 3.5 MHz 3.5兆赫
2. 50 MHz 50兆赫
3. 440 MHz 440兆赫
4. 1296 MHz 1296兆赫

T0C03. How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent? 如果占空比从100%变为50%，射频安全的允许功率密度如何变化？

1. It increases by a factor of 3 它增加了3倍
2. It decreases by 50 percent 它减少了50%
3. It increases by a factor of 2 它增加了2倍
4. There is no adjustment allowed for lower duty cycle 不允许对较低的占空比进行调整

T0C04. What factors affect the RF exposure of people near an amateur station antenna? 哪些因素会影响业余电台天线附近人员的射频暴露？

1. Frequency and power level of the RF field 射频场的频率和功率电平
2. Distance from the antenna to a person 天线到人的距离
3. Radiation pattern of the antenna 天线的辐射方向图
4. All these choices are correct 所有这些选择都是正确的

T0C05. Why do exposure limits vary with frequency? 为什么暴露限值随频率变化？

1. Lower frequency RF fields have more energy than higher frequency fields 较低频率的RF场比较高频率的场具有更多的能量
2. Lower frequency RF fields do not penetrate the human body 低频射频场不会穿透人体
3. Higher frequency RF fields are transient in nature 高频射频场本质上是瞬态的
4. The human body absorbs more RF energy at some frequencies than at others 人体在某些频率下比在其他频率下吸收更多的射频能量

T0C06. Which of the following is an acceptable method to determine whether your station complies with FCC RF exposure regulations? 以下哪项是确定您的电台是否符合FCC射频暴露规定的可接受方法？

1. By calculation based on FCC OET Bulletin 65 根据FCC OET公告65进行计算
2. By calculation based on computer modeling 通过基于计算机建模的计算
3. By measurement of field strength using calibrated equipment 通过使用校准设备测量场强
4. All these choices are correct 所有这些选择都是正确的

T0C07. What hazard is created by touching an antenna during a transmission? 在传输过程中触摸天线会产生什么危险？

1. Electrocution 触电
2. RF burn to skin 射频灼伤皮肤
3. Exposure to ionizing radiation 电离辐射暴露
4. All these choices are correct 所有这些选择都是正确的

T0C08. Which of the following actions can reduce exposure to RF radiation? 以下哪项措施可以减少射频辐射的暴露？

1. Relocate antennas 重新定位天线
2. Relocate the transmitter 重新定位变送器
3. Increase the duty cycle 增加工作循环
4. All these choices are correct 所有这些选择都是正确的

T0C09. How can you make sure your station stays in compliance with RF safety regulations? 如何确保您的电台符合射频安全法规？

1. By informing the FCC of any changes made in your station 通知FCC您电台的任何更改
2. By re-evaluating the station whenever an item in the transmitter or antenna system is changed 每当发射器或天线系统中的项目发生变化时，通过重新评估电台
3. By making sure your antennas have low SWR 通过确保天线的SWR较低
4. By using only Underwriter Laboratories approved transmitting equipment 仅使用美国保险商实验室批准的传输设备

T0C10. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels? 为什么占空比是确定安全射频辐射暴露水平的因素之一？

1. It affects the average exposure to radiation 它影响辐射的平均暴露量
2. It affects the peak exposure to radiation 它会影响辐射峰值
3. It takes into account the antenna feed line loss 它考虑了天线馈线损耗
4. It takes into account the thermal effects of the final amplifier 它考虑了最终放大器的热效应

T0C11. What is the definition of duty cycle during the averaging time for RF exposure? 在射频曝光的平均时间内，占空比的定义是什么？

1. The difference between the lowest and highest power output of a transmitter 发射机最低和最高功率输出之间的差值
2. The difference between the PEP and the average power output of a transmitter PEP与发射机平均功率输出之间的差异
3. The percentage of time that a transmitter is transmitting 发射器发射的时间百分比
4. The percentage of time that a transmitter is not transmitting 发射器未发射的时间百分比

T0C12. How does RF radiation differ from ionizing radiation (radioactivity)? 射频辐射与电离辐射（放射性）有何不同？

1. RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA 射频辐射没有足够的能量来引起细胞的化学变化和损伤DNA
2. RF radiation can only be detected with an RF dosimeter 射频辐射只能用射频剂量计检测
3. RF radiation is limited in range to a few feet 射频辐射范围限制在几英尺以内
4. RF radiation is perfectly safe 射频辐射是完全安全的

T0C13. Who is responsible for ensuring that no person is exposed to RF energy above the FCC exposure limits? 谁负责确保没有人暴露在超过FCC暴露限值的射频能量下？

1. The FCC FCC
2. The station licensee 电台执照
3. Anyone who is near an antenna 任何靠近天线的人
4. The local zoning board 当地分区委员会