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  2. List of transmission sites - Wikipedia

    en.wikipedia.org/wiki/List_of_transmission_sites

    In the following there are lists of sites of notable radio transmitters. During the early history of radio many countries had only a few high power radio stations, operated either by the government or large corporations, which broadcast to the population or to other countries. Because of the large number of transmission sites, this list is not ...

  3. Radio map - Wikipedia

    en.wikipedia.org/wiki/Radio_map

    Example of a radio map estimate using STORM, a transformer-based radio map estimator. Signal strength maps quantify signal strength at each location. Formally, a signal strength map can be seen as a function γ ( r ) {\displaystyle \gamma (\mathbf {r} )} that provides a signal strength metric for each location r {\displaystyle \mathbf {r} } .

  4. Direction finding - Wikipedia

    en.wikipedia.org/wiki/Direction_finding

    The act of measuring the direction is known as radio direction finding or sometimes simply direction finding (DF). Using two or more measurements from different locations, the location of an unknown transmitter can be determined; alternately, using two or more measurements of known transmitters, the location of a vehicle can be determined.

  5. Radiolocation - Wikipedia

    en.wikipedia.org/wiki/Radiolocation

    Radiolocation, also known as radiolocating or radiopositioning, is the process of finding the location of something through the use of radio waves.It generally refers to passive, particularly radar—as well as detecting buried cables, water mains, and other public utilities.

  6. Transmitter - Wikipedia

    en.wikipedia.org/wiki/Transmitter

    Commercial FM broadcasting transmitter at radio station WDET-FM, Wayne State University, Detroit, US.It broadcasts at 101.9 MHz with a radiated power of 48 kW.. In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna with the purpose of signal ...

  7. Radio beacon - Wikipedia

    en.wikipedia.org/wiki/Radio_beacon

    The most basic radio-navigational aid used in aviation is the non-directional beacon or NDB. It is a simple low- and medium-frequency transmitter used to locate airway intersections and airports and to conduct instrument approaches, with the use of a radio direction finder located on the aircraft.

  8. Broadcast transmitter - Wikipedia

    en.wikipedia.org/wiki/Broadcast_transmitter

    A broadcast transmitter is an electronic device that radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images to television receivers (televisions).

  9. Defence High Frequency Communications Service - Wikipedia

    en.wikipedia.org/wiki/Defence_High_Frequency...

    UK DHFCS Transmitter, Receiver and Control Centre Sites [10] [13] [14] Site Name Location Lat/Long Type Station Callsign Notes; DHFCS Crimond: Former RNAS Rattray, Aberdeenshire, Scotland: 57°36'47.78"N, 1°52'52.21"W Transmitter: UK North: Formerly operated by the Royal Navy. DHFCS Forest Moor: Adjacent to former HMS Forest Moor, Harrogate ...