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Identification friend or foe. 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 other electromagnetic frequencies, radio ...
0041–0057. Belgium. Assigned for VFR traffic under Flight Information Services (BXL FIC). [citation needed] 0100. Australia. Flights operating at aerodromes (in lieu of codes 1200, 2000 or 3000 when assigned by ATC or noted in the Enroute Supplement). [6] 0100–0400.
ISO 11784 and ISO 11785. ISO 11784 and ISO 11785 are international standards that regulate the radio-frequency identification (RFID) of animals, which is usually accomplished by implanting, introducing or attaching a transponder containing a microchip to an animal. RF identification of animals requires that the bits transmitted by a transponder ...
Mode 3/A is often combined with Mode C to provide altitude information as well. C: Provides the aircraft's pressure altitude and is usually combined with Mode 3/A to provide a combination of a 4-digit octal code and altitude as Mode 3 A/C, often referred to as Mode A and C: 4: Provides a 3-pulse reply, delay is based on the encrypted challenge: 5
Apollo 15 Lunar Module and Lunar Roving Vehicle, August 1, 1971. The S-band dish antenna for the rover is visible. The Unified S-band ( USB) system is a tracking and communication system developed for the Apollo program by NASA and the Jet Propulsion Laboratory (JPL). It operated in the S band portion of the microwave spectrum, unifying voice ...
SecuriLock. SecuriLock, also known as Passive Anti-Theft System ( PATS ), is an immobilizer technology that Ford began using select Ford as well as Lincoln, and Mercury models. Each key have a radio frequency transponder embedded in the plastic head with a unique electronic identification code.
A transponder (short for trans mitter-res ponder [1] and sometimes abbreviated to XPDR, [2] XPNDR, [3] TPDR [4] or TP [5]) is an electronic device that produces a response when it receives a radio-frequency interrogation. Aircraft have transponders to assist in identifying them on air traffic control radar. Collision avoidance systems have been ...
1–12 m (3–40 ft) Moderate to high Part 6: EAN, various standards; used by railroads: US$0.04 to US$1.00 (passive tags) microwave: 2450–5800 MHz ISM band 1–2 m (3–7 ft) High Part 4: 802.11 WLAN, Bluetooth standards US$25 (active tags) microwave: 3.1–10 GHz Ultra wide band up to 200 m (700 ft) High Not defined