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  2. Distance measuring equipment - Wikipedia

    en.wikipedia.org/wiki/Distance_measuring_equipment

    An airplane's DME interrogator uses frequencies from 1025 to 1150 MHz. DME transponders transmit on a channel in the 962 to 1213 MHz range and receive on a corresponding channel between 1025 and 1150 MHz. The band is divided into 126 channels for interrogation and 126 channels for reply. The interrogation and reply frequencies always differ by ...

  3. Microwave landing system - Wikipedia

    en.wikipedia.org/wiki/Microwave_landing_system

    The beacon transponder operates in the frequency band 962 to 1105 MHz and responds to an aircraft interrogator. The MLS DME/P accuracy is improved to be consistent with the accuracy provided by the MLS azimuth and elevation stations. A DME/P channel is paired with the azimuth and elevation channel.

  4. Tactical air navigation system - Wikipedia

    en.wikipedia.org/wiki/Tactical_air_navigation_system

    Typical US Air Force TACAN site using a dB Systems Model 900E TACAN Antenna. A tactical air navigation system, commonly referred to by the acronym TACAN, is a navigation system initially designed for naval aircraft to acquire moving landing platforms (i.e., ships) and later expanded for use by other military aircraft.

  5. Aviation transponder interrogation modes - Wikipedia

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

    The aviation transponder interrogation modes are the standard formats of pulsed sequences from an interrogating Secondary Surveillance Radar (SSR) or similar Automatic Dependent Surveillance-Broadcast (ADS-B) system.

  6. Identification friend or foe - Wikipedia

    en.wikipedia.org/wiki/Identification_friend_or_foe

    It enables military and civilian air traffic control interrogation systems to identify aircraft, vehicles or forces as friendly, as opposed to neutral or hostile, and to determine their bearing and range from the interrogator. IFF is used by both military and civilian aircraft.

  7. Eagle County Regional Airport - Wikipedia

    en.wikipedia.org/wiki/Eagle_County_Regional_Airport

    There is no standard published ILS approach at the airport, but there is a special ILS approach, mostly used by the airlines, which requires permission and training from the FSDO. General aviation aircraft usually use the LDA approach, DME, or under VFR. The airport also has an on-site Beacon Interrogator (BI-6) Radar facility.

  8. A clandestine Army operative concealed his mental health ...

    www.aol.com/news/clandestine-army-operative...

    Michael Froede, a member of a secret Army unit, exhibited behavior that seemed erratic to his supervisors and peers. But trained in the arts of deception, he hid the extent of his mental health ...

  9. Air traffic control radar beacon system - Wikipedia

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

    The interrogator's processor will then decode the reply and identify the aircraft. The range of the aircraft is determined from the delay between the reply and the interrogation. The azimuth of the aircraft is determined from the direction the antenna is pointing when the first reply was received, until the last reply is received.