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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. Setcom Corporation - Wikipedia

   en.wikipedia.org/wiki/Setcom_Corporation

   In 2000, the System 1600 was introduced. Similar to the System 1300, but instead of two radios, it has the capability to interface six. Improvements to fire industry communications have continued into the present with multiple developments including wireless applications, multi-interfacing capabilities, and more. Setcom redesigned two of their ...

4. 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.

5. 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.

6. 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 ...

7. Radio receiver - Wikipedia

   en.wikipedia.org/wiki/Radio_receiver

   Two-way voice communications - A two-way radio is an audio transceiver, a receiver and transmitter in the same device, used for bidirectional person-to-person voice communication. The radio link may be half-duplex , using a single radio channel in which only one radio can transmit at a time. so different users take turns talking, pressing a ...

8. Duplex (telecommunications) - Wikipedia

   en.wikipedia.org/wiki/Duplex_(telecommunications)

   A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions. Duplex systems are employed in many communications networks, either to allow for simultaneous communication in both directions between two connected parties or to provide a reverse path for the monitoring and remote adjustment ...

9. Multi-Use Radio Service - Wikipedia

   en.wikipedia.org/wiki/Multi-Use_Radio_Service

   There are a wide variety of radio products that use MURS frequencies. MURS devices include wireless base station intercoms, handheld two-way radios, wireless dog training collars, wireless public address units, customer service callboxes, wireless remote switches, and wireless callboxes with or without gate opening ability.