Device that emits an identifying signal in response to a received signal
A Highway 407 toll transponder
In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response.[1] The term is a blend of transmitter and responder.[2][3]
In air navigation or radio frequency identification, a flight transponder is an automated transceiver in an aircraft that emits a coded identifying signal in response to an interrogating received signal.
In a communications satellite, a satellite transponder receives signals over a range of uplink frequencies, usually from a satellite ground station; the transponder amplifies them, and re-transmits them on a different set of downlink frequencies to receivers on Earth, often without changing the content of the received signal or signals.
In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend of transmitter...
The following list shows specific aeronautical transponder codes, and ranges of codes, that have been used for specific purposes in various countries...
The aviation transponder interrogation modes are the standard formats of pulsed sequences from an interrogating Secondary Surveillance Radar (SSR) or...
A search and rescue transponder (SART) is a self-contained, waterproof transponder intended for emergency use at sea. These devices may be either a radar-SART...
Transponder timing (also called chip timing or RFID timing) is a technique for measuring performance in sport events. A transponder working on a radio-frequency...
One Piece (stylized in all caps) is a Japanese manga series written and illustrated by Eiichiro Oda. It has been serialized in Shueisha's shōnen manga...
attaching a transponder containing a microchip to an animal. RF identification of animals requires that the bits transmitted by a transponder are interpretable...
combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that...
communication (COM), navigation (NAV), approach aids and surveillance transponder equipment on board an aircraft. These alphabetic codes are used on FAA...
conducting certain operations. While stand-alone DME transponders are permitted, DME transponders are usually paired with an azimuth guidance system to...
A transponder landing system (TLS) is an all-weather, precision landing system that uses existing airborne transponder and instrument landing system (ILS)...
that prevents the engine from being started unless the correct key (transponder or smart key) is present. This prevents the vehicle from being "hot wired"...
separation of air traffic. It consists of a rotating ground antenna and transponders in aircraft. The ground antenna sweeps a narrow vertical beam of microwaves...
The Texas Instruments digital signature transponder (DST) is a cryptographically enabled radio-frequency identification (RFID) device used in a variety...
specification than Title 21. If a vehicle does not have a transponder, or if a transponder is not detected at the toll plaza, a violation enforcement...
a corresponding active transponder, independent of air traffic control, and warns pilots of the presence of other transponder-equipped aircraft which...
The Small Deep Space Transponder is a transponder designed by JPL specifically for deep space probes. It unifies a number of communication functions -...
terminal was built in Guam to support TDRS. The bilateration ranging transponder system (BRTS) provides tracking support for TDRS spacecraft. BRTS consists...
non-traditional PAR systems use transponder multilateration, triangulation and/or trilateration. One such system, Transponder Landing System (TLS) precisely...
so as to be received by one of the transponders tuned to that frequency range aboard that satellite. The transponder re-transmits the signals back to Earth...
satellites also have a method of communication to ground stations, called transponders. Many satellites use a standardized bus to save cost and work, the most...
satellite transponder service. In 2015, Cignal had reached 1 million subscribers. From 2009, Cignal broadcasts on NSS-11 satellite transponder service....
Global Information