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2. Baofeng UV-5R - Wikipedia

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

   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 ] The UV-5R has attracted the attention of multiple telecommunications regulators due to problems relating primarily to frequency interference and is banned from sale and use in Switzerland ...

3. eXtreme Radio Service - Wikipedia

   en.wikipedia.org/wiki/EXtreme_Radio_Service

   The TriSquare TSX300. eXtreme Radio Service (eXRS) is a proprietary personal communication technology marketed by TriSquare in the United States. The radios, which are similar to other walkie-talkies, use the Part 15 low power communication 915 MHz band, and employ frequency-hopping spread spectrum FM technology to attempt to address some of the perceived shortcomings of Family Radio Service ...

4. Personal radio service - Wikipedia

   en.wikipedia.org/wiki/Personal_radio_service

   As these walkie-talkies are low-powered devices which do not potentially cause interference to other licensed radio services, it need not be licensed for use in Singapore. However, the device must be type approved by IDA for local sale.

5. Family Radio Service - Wikipedia

   en.wikipedia.org/wiki/Family_Radio_Service

   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.

6. General Mobile Radio Service - Wikipedia

   en.wikipedia.org/wiki/General_Mobile_Radio_Service

   Theoretically, the range between two hand-held units on flat ground would be about one or two miles (about 1.5–3 km). Mobile units might have a slightly farther range when mounted on a car roof. A GMRS repeater with an antenna mounted high above the surrounding terrain can extend the usable range to 20 miles or more (30+ km) depending on height.

7. Walkie-talkie - Wikipedia

   en.wikipedia.org/wiki/Walkie-talkie

   Typical walkie-talkies resemble a telephone handset, with a speaker built into one end and a microphone in the other (in some devices the speaker also is used as the microphone) and an antenna mounted on the top of the unit. They are held up to the face to talk. A walkie-talkie is a half-duplex communication device. Multiple walkie-talkies use ...