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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 ...
Two-way radio. 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, which only receives transmissions. Two-way radios usually use a half-duplex ...
Rabbits Abel Kirui, Elijah Keitani and Wilson Kigen pacing Haile Gebrselassie and Charles Kamathi at the Berlin Marathon 2008. A pacemaker or pacesetter, sometimes informally called a rabbit, [1] is a runner who leads a middle- or long-distance running event for the first section to ensure a high speed and to avoid excessive tactical racing.
Here's a sample week from Week 13 of the Peloton program: Day 1: Rest day. Day 2: Tempo run. 45-minute tempo run with effort intervals (note: the effort level for running workouts is a choose-your ...
An example of a half-duplex system is a two-party system such as a walkie-talkie, wherein one must say "over" or another previously designated keyword to indicate the end of transmission, to ensure that only one party transmits at a time. A good analogy for a half-duplex system would be a one-lane road that allows two-way traffic, traffic can ...
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 ...
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. It does not suffer the interference effects found on citizens' band (CB) at 27 MHz, or the 49 MHz band also ...
Firefighter using modern walkie-talkie. Walkie-talkie – a battery-powered portable handheld half-duplex two-way radio, used in land mobile radio systems. [98] Airband – Half-duplex radio system used by aircraft pilots to talk to other aircraft and ground-based air traffic controllers.