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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 ...
A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...
Net operation. A radio net is three or more radio stations communicating with each other on a common channel or frequency. [ 1] A net is essentially a moderated conference call conducted over two-way radio, typically in half-duplex operating conditions. The use of half-duplex operation requires a very particular set of operating procedures to ...
AN/PRC 77 Radio Set is a manpack, portable VHF FM combat-net radio transceiver manufactured by Associated Industries [ 1 ] and used to provide short-range, two-way radiotelephone voice communication. [ 2 ] In the Joint Electronics Type Designation System (JETDS), AN/PRC translates to "Army/Navy, Portable, Radio, Communication."
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 communication involves feedback from the receiver to the sender. This allows the sender to know the message was received accurately by the receiver. One person is the sender, which means they send a message to another person via face to face, email, telephone, etc. The other person is the receiver, which means they are the one getting ...
The ASTRO 25 core is the hub for the communications network. It comprises P25 portable and mobile radios, dispatch consoles, data applications, and RF conventional or trunked sites. In addition to ASTRO 25, Motorola also builds several other P25 radio models, including the APX family of radios, designed for first responders.
The SCR-536 weighed 5 pounds (2.3 kg) with batteries and 3.85 lb (1.75 kg) without batteries. The unit operated in AM voice mode between 3.5 and 6.0 MHz frequency range on any one of 50 channels. Plug in crystals and coils were used to control the frequency of the receiver and transmitter. The antenna was a 40 inch telescoping rod that slid ...