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  2. Wide-coverage Internet Repeater Enhancement System

    en.wikipedia.org/wiki/Wide-Coverage_Internet...

    WIRES II - Yaesu did terminate WIRES-II service on Saturday, September 30, 2017 at 06:00 UTC. They suggested in the future, to use the WIRES-X Internet linking system. [2] [3] WIRES-X - Supports the C4FM digital and the voice technology. It enables high sound quality by repeating C4FM digital data as it is via the Internet.

  3. 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 ...

  4. Through-the-earth mine communications - Wikipedia

    en.wikipedia.org/wiki/Through-the-earth_mine...

    Pimprenelle (Nicola version 2 System) A two-way communication system developed by the Spéléo Secours Français for speleologists. CREG Journal of the Cave Radio and Electronics Group of the British Cave Research Association; MST Global (formerly Mine Site Technologies) for more information on the PED through-the-earth communications system.

  5. Radio over IP - Wikipedia

    en.wikipedia.org/wiki/Radio_over_IP

    With RoIP, at least one node of a network is a radio (or a radio with an IP interface device) connected via IP to other nodes in the radio network. The other nodes can be two-way radios, but could also be dispatch consoles either traditional (hardware) or modern (software on a PC), POTS telephones, softphone applications running on a computer ...

  6. 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 ...

  7. AN/PRC-148 - Wikipedia

    en.wikipedia.org/wiki/AN/PRC-148

    The AN/PRC-6809 MBITR Clear is a variant of the MBITR, made available without encryption. While the PRC-148 includes US Type 1 capabilities in all versions, the PRC-6809 uses Level III Data Encryption Standard, making it available to police, firefighters, and militaries unable to obtain International Traffic in Arms Regulations (ITAR) approval.