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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 ...
GMRS radios are typically handheld portable (walkie-talkies) much like Family Radio Service (FRS) radios, and they share a frequency band with FRS near 462 and 467 MHz. Mobile and base station-style radios are available as well, but these are normally commercial UHF radios as often used in the public service and commercial land mobile bands ...
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]
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 ...
Correction to GMRS power level 462 MHz interstitial (2 to 5 watts) 22:01, 24 March 2022: 512 × 640 (12 KB) Mckoss: Add solid (white) background - instead of transparency. 00:28, 20 March 2022: 512 × 640 (12 KB) Mckoss: Added key/legend: 23:49, 19 March 2022: 512 × 640 (11 KB) Mckoss: Corrected power limits for FRS above 467 MHz: 23:40, 19 ...
It can have a repeater input frequency of 467.675 MHz, and a tone squelch of 141.3 Hz. After FCC deregulation of simplex FRS/GMRS radios, FRS users may transmit up to 2 watts on the GMRS emergency channel 20 (462.675 MHz) with 141.3 Hz CTCSS, or channel 20-22. MURS: 151.940 MHz (only available in the United States)
Personal two-way radios are also sometimes combined with other electronic devices; Garmin's Rino series combine a GPS receiver in the same package as an FRS/GMRS walkie-talkie (allowing Rino users to transmit digital location data to each other) Some personal radios also include receivers for AM and FM broadcast radio and, where applicable ...
An individual license is still required under GMRS rules. A few manufacturers added these DOT frequencies to Business radios in the 1990s to have more "channels" and aid in selling radios. Part 90 (Business) and Part 95 (GMRS) frequencies are not interchangeable and are not to be used under the same guidelines. Each has different criteria for ...