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美国民用对讲机频率(免执照使用)

流星雨 2020-10-18建立 •  583   

FCC (Federal Communications Commission, 联邦通讯委员会)对于FRS的官方规定:

http://www.fcc.gov/encyclopedia/family-radio-service-frs

Family Radio Service (FRS)


The Family Radio Service (FRS) is in the 462 - 467 MHz spectrum range. The most common use for FRS spectrum is short-distance, two-way communications using small, portable hand-held devices that function similar to walkie-talkies.


Similar services include the General Mobile Radio Service (GMRS) and the Multi-Use Radio Service (MURS).


Background


The Family Radio Service (FRS) dates back to 1996 when the FCC authorized the use of 14 channels within the General Mobile Radio Service (GMRS) for use by FRS.

Licensing


The Family Radio Service (FRS) is licensed by rule. This means an individual license is not required to operate an FRS device. You can operate an FRS device regardless of your age and for personal or business use so long as you are not a representative of a foreign government.

FRS是一项法定许可,意味着使用FRS不需要单独申请执照。只要你不是外国政府的代表,任何个人(没有年龄限制)或者组织均可以使用FRS设备,


The FCC service rules for the Family Radio Service (FRS) are located in 47 C.F.R. Part 95.


Channels


There are 14 FRS channels and each channel is 12.5 kHz.

462.5625

462.5875

462.6125

462.6375

462.6625

462.6875

462.7125

467.5625

467.5875

467.6125

467.6375

467.6625

467.6875

467.7125

Operating a Family Radio Service (FRS) Unit


You can operate an FRS device in any place where the FCC regulates radio communications. An FRS device cannot be modified and must be certified by the FCC. A certified FRS device has an identifying label placed on it by the manufacturer.

None of the FRS channels are assigned for the exclusive use of any system. You must cooperate in the selection and use of the channels in order to make the most effective use of them and to reduce the possibility of interference.

FRS设备不能自行改动,并且必须活得FCC的认证,认证标志由生产厂家张贴在设备上。



The usual range of communications between FRS devices is less than one mile. You cannot make telephone calls with an FRS device.


General Mobile Radio Service (GMRS) and Family Radio Service (FRS) Dual Devices


Some manufacturers have received approval to market devices that are certified for use in both the General Mobile Radio Service (GMRS) and the Family Radio Service (FRS). Other manufacturers have received approval of their devices under the GMRS rules, but market them as FRS/GMRS devices on the basis that:

Some channels are authorized to both services, or

A user of the device may communicate with stations in the other service.

Devices marketed as "FRS/GMRS" or "dual-service devices" are available from many manufacturers and many retail or discount stores. The manual that comes with the device, or the label placed on it by the manufacturer, should indicate the service the device is certified for. If you cannot determine what service the device may be used in, contact the manufacturer. If you operate a device that has been approved exclusively under the rules that apply to FRS, you are not required to have a license.

FRS devices have a maximum power of ½ watt (500 milliwatt) effective radiated power and integral (non-detachable) antennas. If you operate a device under the rules that apply to GMRS, you must have a GMRS license. GMRS devices generally transmit at higher power levels (1 to 5 watts is typical) and may have detachable antennas.

FRS设备的最大发射功率是0.5瓦,并且使用不可拆分的一体式天线。你必须拥有GMRS执照才能操作GMRS设备,GMRS设备的发射功率一般为1-5W,并且可以使用可拆分的天线。


If you operate a radio that has been approved for both FRS and GMRS, and if you limit your operations to the FRS channels with a maximum power of ½ watt effective radiated power, you are not required to have a license. (Note that some dual-service radios transmit with higher power on FRS channels 1 through 7; these radios can be used without a license only on FRS channels 8 through 14.)

Bureaus & Offices: Wireless Telecommunications




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美国的CB radio的要求比国内的低,美国的CB radio天线可更换,发射功率要求小于4W,工作在27MHz频段,拥有40个频点。而且美国的CB radio有车台和手台可供选择。由于美国CB radio电台选择多,传输距离远,所以在美国卡车上基本都有cb radio,做为调度使用。猎人的车上也有cb radio,方便和其他猎人交流。RV(房车)里CB radio是标准配备,用于和其他房车和一起出去旅游的朋友通讯,也用于紧急求救用。家庭里也经常能见到cb radio的声音(因为美国人基本住别墅,楼上楼下方便叫人)

以下为美国CB radio频点列表

1 26.965 MHz 11 27.085 MHz 21 27.215 MHz 31 27.315 MHz

2 26.975 MHz 12 27.105 MHz 22 27.225 MHz 32 27.325 MHz

3 26.985 MHz 13 27.115 MHz 23 27.255 MHz 33 27.335 MHz

4 27.005 MHz 14 27.125 MHz 24 27.235 MHz 34 27.345 MHz

5 27.015 MHz 15 27.135 MHz 25 27.245 MHz 35 27.355 MHz

6 27.025 MHz 16 27.155 MHz 26 27.265 MHz 36 27.365 MHz

7 27.035 MHz 17 27.165 MHz 27 27.275 MHz 37 27.375 MHz

8 27.055 MHz 18 27.175 MHz 28 27.285 MHz 38 27.385 MHz

9 27.065 MHz 19 27.185 MHz 29 27.295 MHz 39 27.395 MHz

10 27.075 MHz 20 27.205 MHz 30 27.305 MHz 40 27.405 MHz

http://www.midlandradio.com/CB-Radio.WYQ

一个CB RADIO的生产商网站,大家有兴趣可以上去看看电台的参数。

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