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2. 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 ...

3. Waveband Communications - Wikipedia

   en.wikipedia.org/wiki/Waveband_Communications

   Waveband Communications manufactures over 500 two-way radio communication products. The company product offerings include two-way radio batteries, antennas, battery packs, belt clips, chargers, ear inserts, tips, and plugs, headsets, portable radio adapters, receive only earpieces and remote speaker microphones.

4. Near-field magnetic induction communication - Wikipedia

   en.wikipedia.org/wiki/Near-field_magnetic...

   Near-field magnetic induction technology has been in use by the company FreeLinc, using NFMI to create a secure wireless communication between two-way radio accessories. [1] This is done by creating a magnetic communication "bubble" around headsets, speaker-microphones and radios.

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. First used for infantry, similar ...

6. Wireless - Wikipedia

   en.wikipedia.org/wiki/Wireless

   Wireless communication (or just wireless, when the context allows) is the transfer of information (telecommunication) between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves.

7. Mobile radio - Wikipedia

   en.wikipedia.org/wiki/Mobile_radio

   Many radios are equipped with transmitter time-out timers which limit the length of a transmission. A bane of push-to-talk systems is the stuck microphone: A radio locked on transmit, which disrupts communications on a two-way radio system. One example of this problem occurred in a car with a concealed two-way radio installation where the ...