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2. General Mobile Radio Service - Wikipedia

   en.wikipedia.org/wiki/General_Mobile_Radio_Service

   Current "hybrid" FRS/GMRS radios will not require a GMRS license for power up to 2 watts, but FRS radios will still not be permitted to use the input frequencies of GMRS repeaters. Any radio exceeding the limits of the new FRS service will be classified as a GMRS radio. [19] On September 30, 2019, it became unlawful in the United States to ...

3. Family Radio Service - Wikipedia

   en.wikipedia.org/wiki/Family_Radio_Service

   FRS radios use narrow-band frequency modulation (NBFM) with a maximum deviation of 2.5 kilohertz. The channels are spaced at 12.5 kilohertz intervals. All 22 channels are shared with GMRS radios. Initially, the FRS radios were limited to 500 milliwatts across all channels. However, after May 18, 2017, the limit is increased to 2 watts on ...

4. Continuous Tone-Coded Squelch System - Wikipedia

   en.wikipedia.org/wiki/Continuous_Tone-Coded...

   GMRS/FRS radios offering CTCSS codes typically provide a choice of 38 tones, but the tone number and the tone frequencies used may vary from one manufacturer to another (or even within product lines of one manufacturer) and should not be assumed to be consistent (i.e. "Tone 12" in one set of radios may not be "Tone 12" in another). [11]

5. Personal radio service - Wikipedia

   en.wikipedia.org/wiki/Personal_radio_service

   For a time dual-standard FRS and General Mobile Radio Service (GMRS) radios were available, that could be operated without individual licensing on the FRS channels, but which required a license to operate on the GMRS frequencies at a power level above the FRS standard. In May 2017 the regulations were changed so that FRS service included ...

6. Radio Emergency Associated Communication Teams - Wikipedia

   en.wikipedia.org/wiki/Radio_Emergency_Associated...

   (a) To develop the use of personal radio services as an additional source of communications for emergencies, disasters, and as an emergency aid to individuals; [1] (b) To establish 24-hour volunteer monitoring of emergency calls, particularly over officially designated emergency frequencies, from personal radio service operators, and report such calls to appropriate emergency authorities; [1]

7. Radio spectrum - Wikipedia

   en.wikipedia.org/wiki/Radio_spectrum

   The radio spectrum is the part of the electromagnetic spectrum with frequencies ... emergency locator beacon, FRS and GMRS radios, amateur radio, satellite radio, ...