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2. 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.

3. 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 ...

4. Very high frequency - Wikipedia

   en.wikipedia.org/wiki/Very_high_frequency

   The VHF band is the first band at which efficient transmitting antennas are small enough that they can be mounted on vehicles and portable devices, so the band is used for two-way land mobile radio systems, such as walkie-talkies, and two way radio communication with aircraft and ships (marine radio).

5. List of radios - Wikipedia

   en.wikipedia.org/wiki/List_of_radios

   The RCA model R7 Superette superheterodyne table radio. This is a list of notable radios, which encompasses specific models and brands of radio transmitters, receivers and transceivers, both actively manufactured and defunct, including receivers, two-way radios, citizens band radios, shortwave radios, ham radios, scanners, weather radios and airband and marine VHF radios.

6. Personal radio service - Wikipedia

   en.wikipedia.org/wiki/Personal_radio_service

   Japan has several services in the VHF and UHF bands: Japan's Specified Low Power Radio (特定小電力無線局, tokutei shōdenryoku musenkyoku) or SLPR service covers a variety of low-power uses, and does not require registration. Walkie-talkies are limited to 10 mW in the 420, 421, and 422 MHz bands.

7. AN/PRC-6 - Wikipedia

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

   The AN/PRC-6 is a walkie-talkie ... The AN/PRC-6 operates using wide-band FM on a single crystal controlled frequency in the 47 to 55.4 MHz low band VHF band. [2]