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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, in contrast to a broadcast receiver, which ...

3. Project 25 - Wikipedia

   en.wikipedia.org/wiki/Project_25

   Project 25 ( P25 or APCO-25) is a suite of standards for interoperable digital two-way radio products. P25 was developed by public safety professionals in North America and has gained acceptance for public safety, security, public service, and commercial applications worldwide. [ 1] P25 radios are a direct replacement for analog UHF (typically ...

4. Walkie-talkie - Wikipedia

   en.wikipedia.org/wiki/Walkie-talkie

   Walkie-talkie. Recreational, toy and amateur radio walkie-talkies. Assorted two-way FRS and GMRS walkie talkies with hand mic. A walkie-talkie, more formally known as a handheld transceiver ( HT ), is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald Hings, radio ...

5. Radiotelephony procedure - Wikipedia

   en.wikipedia.org/wiki/Radiotelephony_procedure

   Radiotelephony procedure (also on-air protocol and voice procedure) includes various techniques used to clarify, simplify and standardize spoken communications over two-way radios, in use by the armed forces, in civil aviation, police and fire dispatching systems, citizens' band radio (CB), and amateur radio . Voice procedure communications are ...

6. Police radio - Wikipedia

   en.wikipedia.org/wiki/Police_radio

   Police radio is a radio system used by police and other law enforcement agencies to communicate with one another. Police radio systems almost always use two-way radio systems to allow for communications between police officers and dispatchers . Most modern police radio systems are encrypted, and many jurisdictions have made listening to police ...

7. Shomrim (neighborhood watch group) - Wikipedia

   en.wikipedia.org/wiki/Shomrim_(neighborhood...

   Shomrim volunteers have occasionally been criticized for using excessive force with suspects, particularly non-Jews. In 1996 a Crown Heights Shomrim volunteer was convicted of assault charges after repeatedly hitting a suspect on the head with a walkie-talkie after the man had been subdued. [2]