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  2. Search and rescue transponder - Wikipedia

    en.wikipedia.org/wiki/Search_and_rescue_transponder

    A standard SART 9 GHz radar transponder, produced by Jotron, on board a Norwegian ferry. The unit is 251 mm high. A search and rescue transponder (SART) is a self-contained, waterproof transponder intended for emergency use at sea. These devices may be either a radar-SART, or a GPS-based AIS-SART (automatic identification system SART).

  3. List of radar types - Wikipedia

    en.wikipedia.org/wiki/List_of_radar_types

    Secondary radar emits pulses and listens for special answer of digital data emitted by an Aircraft Transponder as an answer. Transponders emit different kind of data like a 4 octal ID (mode A), the onboard calculated altitude (mode C) or the Callsign (not the flight number) (mode S). Military use transponders to establish the nationality and ...

  4. Global Maritime Distress and Safety System - Wikipedia

    en.wikipedia.org/wiki/Global_Maritime_Distress...

    The GMDSS installation on ships include one (two on vessels over 500 GT) search-and-rescue locating device called Search and Rescue Radar Transponders (SART) which are used to locate survival craft or distressed vessels by creating a series of twelve dots on a rescuing ship's 3 cm radar display. The detection range between these devices and ...

  5. Airport surveillance radar - Wikipedia

    en.wikipedia.org/wiki/Airport_surveillance_radar

    The transponder code is assigned to the aircraft by the air traffic controller before takeoff. Controllers use the term "squawk" when they are assigning a transponder code, e.g., "Squawk 7421". Transponders can respond with one of several different "modes" determined by the interrogation pulse from the radar.

  6. List of military electronics of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_military...

    Fixed search radar, stripped-down version of AN/CPS-6B: AN/FPS-12: Surveillance radar supporting Downrange Anti-missile Measurement Program : USAS American Mariner: AN/FPS-14: S-band medium-range low-altitude search Radar: Bendix Corporation: AN/FPS-16: Ground-based monopulse single object tracking radar (SOTR) NASA, US Air Force, US Army

  7. VERA passive sensor - Wikipedia

    en.wikipedia.org/wiki/VERA_passive_sensor

    Model of VERA-NG. VERA is supplied in a number of versions. VERA-AP is the civilian long-range air traffic control (ATC) version, which only exploits civilian SSR transponders at 1030 and 1090 MHz. VERA-E is the export version of the military ESM version of the system, also referred to as the VERA-S/M in its national mobile version.

  8. AN/FPS-16 Instrumentation Radar - Wikipedia

    en.wikipedia.org/.../AN/FPS-16_Instrumentation_Radar

    The C-Band Radar Transponder (Model SST-135C) is intended to increase the range and accuracy of the radar ground stations equipped with AN/FPS-16, and AN/FPQ-6 Radar Systems. C-band radar stations at the Kennedy Space Center, along the Atlantic Missile Range, and at many other locations around the world, provide global tracking capabilities.

  9. Amateur radio satellite - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_satellite

    These satellites can be used free of charge by licensed amateur radio operators for voice (FM, SSB) and data (AX.25, packet radio, APRS) communications. Currently, over 18 fully operational amateur radio satellites are in orbit. [2] They may be designed to act as repeaters, as linear transponders, and as store and forward digital relays.