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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. IFF systems usually use radar frequencies, but ...
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. The reply format is usually referred to as a "code" from a transponder, which is used to determine detailed information from a ...
The VHF Data Link or VHF Digital Link (VDL) is a means of sending information between aircraft and ground stations (and in the case of VDL Mode 4, other aircraft). Aeronautical VHF data links use the band 117.975–137 MHz assigned by the International Telecommunication Union to Aeronautical mobile (R) service. There are ARINC standards for ...
The National Transportation Safety Board has issued an urgent warning to airlines that fly the Boeing 737, saying a failure first seen on a United Airlines flight in February could cause problems ...
Updated August 26, 2024 at 4:24 PM AaronP/Bauer-Griffin Qantas accidentally sold first-class airfares to hundreds of customers at a steep discount, a bargain that turned out to be too good to be true.
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September 26, 2024 at 2:13 PM. Two people were arrested after their single-engine plane made an emergency landing on a Southern California highway, and a "large quantity of narcotics" was ...
The original design had three such "modes", Mode 1 was triggered by the interrogator by sending the two pulses 3 μs apart (±0.2 μs), Mode 2 was 5 μs and Mode 3 was 8 μs. [ 10 ] The response to these interrogations remained simple; a successful interrogation on Mode 1 or 3 caused a single pulse to be sent in reply, very shortly after the ...