FCC T2B - 电台操作规范

#T2B01🔗

What is the purpose of the reverse function on a VHF/UHF transceiver?

VHF/UHF 收发机上的反向功能的目的是什么？

To reduce power output

减少功率输出

To increase power output

增加功率输出

To listen on a repeater’s input frequency

收听中继器的输入频率

✓ 正确答案

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？

Carrier squelch

载波抑制

Tone burst

爆音

DTMF

双音多频

CTCSS

✓ 正确答案

#T2B03🔗

Which of the following describes a linked repeater network?

以下哪项描述了链接中继器网络？

A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network

一个中继器网络，其中一个中继器接收到的信号由网络中的所有中继器传输

✓ 正确答案

A single repeater with more than one receiver

具有多个接收器的单个中继器

Multiple repeaters with the same control operator

具有相同主控操作员的多个中继器

A system of repeaters linked by APRS

由 APRS 链接的中继器系统

#T2B04🔗

Which of the following could be the reason you are unable to access a repeater whose output you can hear?

以下哪项可能是您无法访问可以听到其输出的中继器的原因？

Improper transceiver offset

不正确的收发器偏移

You are using the wrong CTCSS tone

您使用的是错误的 CTCSS 提示音

You are using the wrong DCS code

您使用了错误的 DCS 代码

All these choices are correct

这些选项都是正确的

✓ 正确答案

#T2B05🔗

Which of the following would cause your FM transmission audio to drop out on voice peaks?

以下哪项会导致 FM 传输音频在语音峰值时丢失？

Your repeater offset is inverted

您的中继器偏移量是倒置的

Your FM deviation is too low

您的 FM 偏差太低

You are talking too loudly

你说话太大声了

✓ 正确答案

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?

什么类型的中继器信号使用两个同时的音频？

DTMF

✓ 正确答案

CTCSS

GMRS

D-STAR

#T2B07🔗

How can you join a digital repeater’s “talkgroup”?

如何加入数字中继器的“通话组”？

向当地频率协调员注册

向数字中继器主控操作员注册

Program your radio with the group ’s ID or code

使用组的 ID 或代码对您的对讲机进行编程

✓ 正确答案

Program your radio with the DTMF tone used by the talkgroup

使用通话组使用的 DTMF 音对收音机进行编程

#T2B08🔗

Which of the following applies when two stations transmitting on the same frequency interfere with each other?

当两个以相同频率传输的电台相互干扰时，以下哪一项适用？

The stations should negotiate continued use of the frequency

电台应协商继续使用该频率

✓ 正确答案

Both stations should choose another frequency to avoid conflict

两个站应该选择另一个频率以避免冲突

Whichever station was on the frequency first has preemptive rights to the frequency

哪个电台先使用该频率，就拥有该频率的优先购买权

Use subaudible tones so both stations can share the frequency

使用亚音频让两个站可以共享频率

#T2B09🔗

Why are simplex channels designated in the VHF/UHF band plans?

为什么 VHF/UHF 频段规划中指定单工频道？

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

✓ 正确答案

For contest operation

用于大赛运营

For working DX only

仅适用于工作 DX

So stations with simple transmitters can access the repeater without automated offset

因此，具有简单发射器的电台无需自动偏移即可访问中继器

#T2B10🔗

Which Q signal indicates that you are receiving interference from other stations?

哪个 Q 信号表明您正在接收来自其他电台的干扰？

QRM

✓ 正确答案

QRN

QTH

QSB

#T2B11🔗

Which Q signal indicates that you are changing frequency?

哪个 Q 信号表示您正在改变频率？

QRU

QSY

✓ 正确答案

QSL

QRZ

#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？

An access code which must be programmed into a DMR transmitter to access a specific repeater

必须编程到 DMR 发射器中才能访问特定中继器的访问代码

✓ 正确答案

A code which automatically programs the repeater offset to a frequency chosen by the user

自动将中继器偏移编程为用户选择的频率的代码

A code which identifies the specific CODEC being used so that the repeater can properly decode the audio

识别正在使用的特定编解码器的代码，以便中继器可以正确解码音频

A code transmitted by the repeater to indicate health and status of the equipment

由中继器传输的代码，用于指示设备的健康状况和状态

#T2B13🔗

What is the purpose of a squelch function?

静噪功能的目的是什么？

Reduce a CW transmitter's key clicks

减少 CW 发射器的按键点击次数

Mute the receiver audio when a signal is not present

当信号不存在时使接收器音频静音

✓ 正确答案

Eliminate parasitic oscillations in an RF amplifier

消除射频放大器中的寄生振荡

Reduce interference from impulse noise

减少脉冲噪声的干扰

#T2B14🔗

Which of the following is a “talkgroup”?

以下哪一个是“通话组”？

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，他们就特定的业余无线电主题分享电子邮件

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 用于组织无线电流量的标识符，以便那些想要收听该组的人不会被其他无线电流量打扰

✓ 正确答案

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

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发送信号的频率的方法

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FCC T2B - 电台操作规范

小节 T2B：电台操作规范