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  2. List of transponder codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Transponder_Codes

    External ARTCC subsets. (Blocks of discrete codes except that xx00 is used as a non-discrete code after all discrete codes are assigned.) [3] 7000 ICAO: VFR standard squawk code when no other code has been assigned. [1] EASA countries: Code that pilot shall set when not receiving air traffic services, unless otherwise prescribed by the ...

  3. Transponder (aeronautics) - Wikipedia

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

    A discrete transponder code (often called a squawk code) is assigned by air traffic controllers to identify an aircraft uniquely in a flight information region (FIR). This allows easy identification of aircraft on radar. [6] [7] Codes are made of four octal digits; the dials on a transponder read from zero to seven, inclusive. Four octal digits ...

  4. Chamberlain Group - Wikipedia

    en.wikipedia.org/wiki/Chamberlain_Group

    Clicker — a line of universal garage door remotes. Chamberlain, LiftMaster, and Craftsman have interchangeable parts, primarily the gear and circuit boards. The greatest difference between the brands is that Chamberlain and Craftsman operate on a square shaped split-rail system, while LiftMaster consists of one single solid piece of inverted ...

  5. Rolling code - Wikipedia

    en.wikipedia.org/wiki/Rolling_code

    A rolling code (or sometimes called a hopping code) is used in keyless entry systems to prevent a simple form of replay attack, where an eavesdropper records the transmission and replays it at a later time to cause the receiver to 'unlock'. Such systems are typical in garage door openers and keyless car entry systems.

  6. Identification friend or foe - Wikipedia

    en.wikipedia.org/wiki/Identification_friend_or_foe

    Commonly referred to as a squawk code. [21] Mode 4: military only; provides a 3-pulse reply, delay is based on the encrypted challenge. [21] Mode 5: military only; provides a cryptographically secured version of Mode S and ADS-B GPS position. [21] Modes 4 and 5 are designated for use by NATO forces.

  7. Squawk code - Wikipedia

    en.wikipedia.org/wiki/Squawk_code

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  8. Virtual Air Traffic Simulation Network - Wikipedia

    en.wikipedia.org/wiki/Virtual_Air_Traffic...

    On January 14, 2012, the vSTARS ATC client was approved for use on the VATSIM network. [43] Also created by Ross Carlson, the client aims to replicate the real-world STARS system used in many US TRACON facilities. On February 27, 2016, the vERAM ATC client was approved for use on the VATSIM network. [44]

  9. International Code of Signals - Wikipedia

    en.wikipedia.org/wiki/International_Code_of_Signals

    The Medical Signal Code [13] (incorporated in the International Code of Signals since 1930) is a means of providing assistance when medical personnel are not present. Plain language is generally preferred in such cases (presumably via radiotelephone), but the various codes provide a succinct method of communicating to a doctor the nature of the ...