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2. Land mobile radio system - Wikipedia

   en.wikipedia.org/wiki/Land_mobile_radio_system

   A land mobile radio system (LMRS) is a person-to-person voice communication system consisting of two-way radio transceivers (an audio transmitter and receiver in one unit) which can be stationary (base station units), mobile (installed in vehicles), or portable (handheld transceivers e.g. "walkie-talkies"). Public land mobile radio systems are ...

3. AN/PRC-6 - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-6

   Israel too manufactured single channel equipment. Modernization of the AN/PRC6 resulted in various solid state crystal controlled and synthesized radios, usually with higher output ratings. For example, Greek valved sets were refurbished in the mid-1980s and converted into single channel solid state one watt units housed inside the original casing.

4. Two-way radio - Wikipedia

   en.wikipedia.org/wiki/Two-way_radio

   Naval air traffic controller communicates with aircraft over a two-way radio headset A variety of portable handheld two-way radios for private use. A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, [1] in contrast to a broadcast receiver ...

5. Walkie-talkie - Wikipedia

   en.wikipedia.org/wiki/Walkie-talkie

   A walkie-talkie, more formally known as a handheld transceiver, HT, or handheld radio, is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald Hings , radio engineer Alfred J. Gross , Henryk Magnuski and engineering teams at Motorola .

6. Personal radio service - Wikipedia

   en.wikipedia.org/wiki/Personal_radio_service

   In Europe, PMR446 is a personal radio service with two sets of 16 channels and one set of 8 channels available for a total of 40 channels. The original PMR446 allocation for 16 channels from 446.00625 MHz to 446.19375 MHz with 12.5 kHz channel spacing steps has been complemented with two digital channel plans (sometimes called "DMR446" or ...

7. General Mobile Radio Service - Wikipedia

   en.wikipedia.org/wiki/General_Mobile_Radio_Service

   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 ...

8. Baofeng UV-5R - Wikipedia

   en.wikipedia.org/wiki/Baofeng_UV-5R

   As a result, it was not authorized for use in the GMRS and FRS, only for amateur radio. [5] [6] Baofeng launched a number of other models based on the UV-5R technology, since 2012. Other radios from other Chinese manufacturers have mainly the same range of functions, specs and menu like the UV-5R, for example the Retevis RT5. [7]

9. 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 ...