FCC T8C - 调制模式与通信方式

#T8C01🔗

Which of the following methods is used to locate sources of noise interference or jamming?

以下哪项方法用于定位噪声干扰或干扰源？

Echolocation

回声定位

Doppler radar

多普勒雷达

Radio direction finding

无线电测向

✓ 正确答案

Phase locking

锁相

#T8C02🔗

Which of these items would be useful for a hidden transmitter hunt?

这些物品中的哪些对寻找隐藏的发射器有用？

Calibrated SWR meter

校准 SWR 表

A directional antenna

定向天线_

✓ 正确答案

A directional wattmeter

定向瓦特计

All these choices are correct

这些选项都是正确的

#T8C03🔗

What operating activity involves contacting as many stations as possible during a specified period?

哪些运营活动涉及在指定时间段内联系尽可能多的站点？

Simulated emergency exercises

模拟应急演练

Net operations

净操作

Hidden transmitter hunts

隐藏的发射机搜寻

Contesting

竞赛

✓ 正确答案

#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，以下哪项是好的做法？

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呼叫，则仅签署呼叫的最后两个字母

Contacting the station twice to be sure that you are in his log

联系电台两次以确保您在他的日志中

Sending only the minimum information needed for proper identification and the contest exchange

仅发送正确识别和竞赛交流所需的最少信息

✓ 正确答案

Adding “Please copy” before your exchange

兑换前添加“请复制”

#T8C05🔗

What is a grid locator?

什么是网格定位器？

A letter-number designator assigned to a geographic location

分配给地理位置的字母数字指示符

✓ 正确答案

A letter-number designator assigned to an azimuth and elevation

分配给方位角和仰角的字母数字指示符

An instrument for locating faults in power amplifiers

一种功率放大器故障定位仪器

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?

如何通过无线方式访问互联网广播链接项目 (IRLP) 节点？

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

By using Dual -Tone Multi - Frequency ( DTMF ) signals

通过使用双音多频 (DTMF) 信号

✓ 正确答案

By entering the proper internet password

输入正确的互联网密码

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) 音调代码

#T8C07🔗

What is Voice Over Internet Protocol (VoIP)?

什么是互联网协议语音 (VoIP)？

A set of rules specifying how to identify your station when linked over the internet to another station

一组规则，指定在通过 Internet 链接到另一个站点时如何识别您的站点

A technique employed to “spot” DX stations via the internet

一种通过互联网“发现”DX 站的技术

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

A method of delivering voice communications over the internet using digital techniques

一种使用数字技术通过互联网传送语音通信的方法

✓ 正确答案

#T8C08🔗

What is the Internet Radio Linking Project (IRLP)?

什么是网络广播链接项目 (IRLP)？

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（例如中继器）的技术

✓ 正确答案

A system for providing access to websites via amateur radio

通过业余无线电提供网站访问的系统

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 站频率的系统

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通过中继器进行传输，而无需使用无线电来启动传输？

IRLP

D-STAR

D星

DMR

数字磁共振

EchoLink

回声链接

✓ 正确答案

#T8C10🔗

What is required before using the EchoLink system?

使用 EchoLink 系统前需要什么？

Complete the required EchoLink training

完成所需的 EchoLink 培训

Purchase a license to use the EchoLink software

购买使用 EchoLink 软件的许可证

注册您的呼号并提供执照证明

✓ 正确答案

At least a General Class license

至少有普通级执照

#T8C11🔗

What is an amateur radio station that connects other amateur stations to the internet?

将其他业余电台连接到互联网的业余电台是什么？

A gateway

网关_

✓ 正确答案

A repeater

中继器

A digipeater

数字中继台

A beacon

一座灯塔

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FCC T8C - 调制模式与通信方式

小节 T8C：调制模式与通信方式