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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 ...
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 ...
In the following there are lists of sites of notable radio transmitters. During the early history of radio many countries had only a few high power radio stations, operated either by the government or large corporations, which broadcast to the population or to other countries. Because of the large number of transmission sites, this list is not ...
A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [ 1 ]
RFinder's main service is the World Wide Repeater Directory (WWRD), which is a directory of amateur radio repeaters. RFinder is the official repeater directory of several amateur radio associations. RFinder has listings for several amateur radio modes , including FM , D-STAR , DMR , and ATV .
MDC (Motorola Data Communications), also known as Stat-Alert, MDC-1200 and MDC-600, is a Motorola two-way radio low-speed data system using audio frequency shift keying, (AFSK).
In the case of the GMRS service, this is to be done by each station in a similar manner to the amateur practice, though the time limit is fifteen minutes. Repeater systems used in both the land mobile and amateur radio services often have provisions for announcing the repeater's call sign, either in voice or Morse code.
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.
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