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  2. Transponder (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Transponder_(aeronautics)

    In this example, the transponder code selected is 1200 for VFR flight (in North American airspace). The green IDENT button is marked "ID". A transponder (short for transmitter-responder [1] and sometimes abbreviated to XPDR, [2] XPNDR, [3] TPDR [4] or TP [5]) is an

  3. Air traffic control radar beacon system - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_control_radar...

    It has a method to enter the four-digit transponder code, also known as a beacon code or squawk code, and a control to transmit an ident, which is done at the controller's request (see SPI pulse below). Transponders typically have 4 operating modes: Off, Standby, On (Mode-A), and Alt (Mode-C).

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

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

    Combined interrogator & transponder system: BAE Systems: AN/APX-118: Identification Friend or Foe (IFF) system: P-3 Orion: AN/APX-119: Identification Friend or Foe (IFF) system: F-15 Eagle, F-15E Strike Eagle: Raytheon: AN/APX-125: Combined interrogator & transponder system: BAE Systems: AN/APX-126: Combined interrogator & transponder system ...

  5. Aviation transponder interrogation modes - Wikipedia

    en.wikipedia.org/wiki/Aviation_transponder...

    Mode S transponders are compatible with Mode A and Mode C Secondary Surveillance Radar (SSR) systems. [2] This is the type of transponder that is used for TCAS or ACAS II (Airborne Collision Avoidance System) functions, and is required to implement the extended squitter broadcast, one means of participating in ADS-B systems. A TCAS-equipped ...

  6. List of transponder codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Transponder_Codes

    The following list shows specific aeronautical transponder codes, and ranges of codes, that have been used for specific purposes in various countries. Traditionally, each country has allocated transponder codes by their own scheme with little commonality across borders. The list is retained for historic interest.

  7. STAR Systems International Readers and Transponders Assist RD ...

    lite.aol.com/tech/story/0022/20240912/9229851.htm

    The STAR Systems’ tags being deployed are OmniAir certified for interoperability in tolling systems, providing assurance of highly automated read rates. “Tarvos Pro is a best-in-class next-generation reader for vehicle ID and tolling systems, and we are dedicated to supporting RD Vial as they deploy their new digitally transformed system ...

  8. Identification friend or foe - Wikipedia

    en.wikipedia.org/wiki/Identification_friend_or_foe

    Model XAE IFF kit, the first radio recognition IFF system in the U.S. Identification, friend or foe (IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster.

  9. Illinois ditching I-PASS transponders for sticker tags ... - AOL

    www.aol.com/illinois-ditching-pass-transponders...

    There isn't a deadline, but a transponder's battery may die around the time it is marked to expire. Tom Ackerman covers breaking news and trending news along with general news for the Springfield ...