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Sgt. William T. Alexander, flight engineer, with B-24D#42-63980 of the 858th BS, 801st/492nd BG "Carpetbaggers" in 1944, showing Yagi antenna for Rebecca transceiverThe Rebecca/Eureka transponding radar was a short-range radio navigation system used for the dropping of airborne forces and their supplies.
An older EZ TAG The inside of an older EZ TAG. To participate, a driver signs up through the EZ TAG website, via telephone, or at one of the store locations. Next, the customer receives a small, white radio frequency transponder which must be affixed to the inside of their windshield behind their rear view mirror.
D-VOR/DME ground station DME antenna beside the DME transponder shelter. In aviation, distance measuring equipment (DME) is a radio navigation technology that measures the slant range (distance) between an aircraft and a ground station by timing the propagation delay of radio signals in the frequency band between 960 and 1215 megahertz (MHz).
An equipment code describes the communication (COM), navigation (NAV), approach aids and surveillance transponder equipment on board an aircraft.These alphabetic codes are used on FAA and ICAO flight plan forms to aid Flight service station (FSS) personnel in their handling of aircraft.
Squitter refers to random pulses, pulse-pairs and other non-solicited messages used in various aviation radio systems' signal maintenance. Squitter pulses were originally, and are still, used in the DME/TACAN air navigation systems.
The full identifier starts with an ISO 3166-1 alpha-2 (2 letters) country code (except for Greece, which uses the ISO 639-1 language code EL for the Greek language, instead of its ISO 3166-1 alpha-2 country code GR, and Northern Ireland, which uses the code XI when trading with the EU) and then has between 2 and 13 characters.
A standard SART 9 GHz radar transponder, produced by Jotron, on board a Norwegian ferry. The unit is 251 mm high. A search and rescue transponder (SART) is a self-contained, waterproof transponder intended for emergency use at sea.
An E-ZPass toll booth in New York City with its transmission antennae highlighted in the yellow boxes An E-ZPass system transponder unit, also known as a tag or a pack, was distributed by the Massachusetts Turnpike Authority for use with their E-ZPass-compatible Fast Lane system and other roads which utilize E-ZPass.