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As with FRS/GMRS and PMR446, the use of tone squelch systems such as CTCSS/DCS is encouraged. Like the PMR446, LPD433, Japan's 421–422 MHz SLPR service and KDR444 services, use of these frequencies in countries such as the United States is illegal without an amateur radio license as they fall within the 420–450 MHz 70 cm ham radio allocation.
TIDRADIO TD-H5 GMRS radios. The General Mobile Radio Service (GMRS) is a land-mobile FM UHF radio service designed for short-range two-way voice communication and authorized under part 95 of the US FCC code. It requires a license in the United States, but some GMRS compatible equipment can be used license-free in Canada. The US GMRS license is ...
Most of the 460–470 MHz band was reassigned for business and public-safety use; CB Class A is the forerunner of the General Mobile Radio Service (GMRS). CB Class B is a more distant ancestor of the Family Radio Service. The Multi-Use Radio Service is another two-way radio service in the VHF high band.
Class A and B were eventually replaced by the Family Radio Service (FRS) and General Mobile Radio Service (GMRS). What was initially Class C, is now known as the Radio Control Radio Service and now includes spectrum at 72 and 76 MHz in addition to the original 27-MHz channels interspersed among voice channels as well as CB channel 23. [2]
1970: CB-9 was designated the 'Emergency and Travelers' Assistance Channel' by the FCC. The Ohio REACT Network was created. It worked with the Ohio State Highway Patrol to demonstrate how CB-9 could enhance highway safety. It later became the first REACT Council. REACT signed its first MOU (Memorandum of Understanding) with the American Red Cross.
Motorola T5320 FRS handheld radio. The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band.