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  2. Amateur radio repeater - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_repeater

    A repeater controller can be a hardware solution or even be implemented in software. [6] Repeaters typically have a timer to cut off retransmission of a signal that goes too long. Repeaters operated by groups with an emphasis on emergency communications often limit each transmission to 30 seconds, while others may allow three minutes or even ...

  3. Amateur Radio Emergency Service - Wikipedia

    en.wikipedia.org/wiki/Amateur_Radio_Emergency...

    ARES groups are generally organized by city or county and are made up of volunteers from the local area. The only requirements to join ARES are a willingness to serve and a valid amateur radio license. [6] Groups are organized locally by the person holding the position of Emergency Coordinator (EC). The EC maintains full responsibility for ...

  4. Frequency coordinator - Wikipedia

    en.wikipedia.org/wiki/Frequency_coordinator

    Frequency Coordination is required for a new filing. Major Modifications and Amendments that change or add frequencies, emissions, ERP, Output Power, Antenna Height, Ground Elevation, change location of Base, Fixed, Mobile or Control stations or number of Mobile units and any change to station class.

  5. Radio repeater - Wikipedia

    en.wikipedia.org/wiki/Radio_repeater

    A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [1]

  6. General Mobile Radio Service - Wikipedia

    en.wikipedia.org/wiki/General_Mobile_Radio_Service

    Linking multiple repeaters to enable a repeater outside the communications range of the handheld or mobile device to retransmit messages violates sections 95.1733(a)(8) and 95.1749 of the Commission's rules, and potentially other rules in 47 C.F.R. Repeaters may be connected to the telephone network or other networks only for purposes of remote ...

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    mail.aol.com

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  8. Broadcast relay station - Wikipedia

    en.wikipedia.org/wiki/Broadcast_relay_station

    NHK digital television, KRY, TYS and YAB transmitter in Iwakuni. A broadcast relay station, also known as a satellite station, relay transmitter, broadcast translator (U.S.), re-broadcaster (Canada), repeater (two-way radio) or complementary station (Mexico), is a broadcast transmitter which repeats (or transponds) the signal of a radio or television station to an area not covered by the ...

  9. AN/DRC-8 Emergency Rocket Communications System - Wikipedia

    en.wikipedia.org/wiki/AN/DRC-8_Emergency_Rocket...

    The Emergency Rocket Communications System (ERCS) was designed to provide a reliable and survivable emergency communications method for the United States National Command Authority, using a UHF repeater placed atop a Blue Scout rocket or Minuteman II intercontinental ballistic missile.