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2. 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 ...

3. List of radios - Wikipedia

   en.wikipedia.org/wiki/List_of_radios

   AN/PRC-6 – a walkie-talkie used by the U.S. military in the late Korean War era through the Vietnam War; Army No. 108 Wireless Set – was a wireless radio transceiver used by the Australian Army during World War II. The unit was based on the Wireless Set No. 18 and was modified during its production forming 3 different variants: Mk1, Mk2 and ...

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. 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. Personal radio service - Wikipedia

   en.wikipedia.org/wiki/Personal_radio_service

   Personal radio services exist around the world and typically use light-weight walkie talkie portable radios. The power output, antenna size, and technical characteristics of the equipment are set by regulations in each country.

7. 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").