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...

A transponder (short for transmitter-responder and sometimes abbreviated to XPDR, XPNDR, TPDR or TP) is an electronic device that produces a response...

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 communications satellite's transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting...

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...

combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that...

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...

The Iris transponder is a small, low power deep-space transponder designed by JPL for use in cubesats. It unifies a number of communication functions -...

conducting certain operations. While stand-alone DME transponders are permitted, DME transponders are usually paired with an azimuth guidance system to...

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"...

track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by...

communication (COM), navigation (NAV), approach aids and surveillance transponder equipment on board an aircraft. These alphabetic codes are used on FAA...

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...

opening of Interstate 355 (Veterans Memorial Tollway). It uses the same transponder as the E-ZPass system used in the Northeastern US, the Chicago Skyway...

A transponder landing system (TLS) is an all-weather, precision landing system that uses existing airborne transponder and instrument landing system (ILS)...

states, which use the same technology and allow travelers to use the same transponder on toll roads throughout the network. Since its creation in 1987, various...

terminal was built in Guam to support TDRS. The bilateration ranging transponder system (BRTS) provides tracking support for TDRS spacecraft. BRTS consists...

capability at 1090 MHz, user-operators can install a new transponder or modify an existing transponder if the manufacturer offers an ADS-B upgrade (plus install...

Louisiana, plus NationalPass. If a vehicle does not have a transponder, or if a transponder is not detected at the toll plaza, a violation enforcement...

attaching a transponder containing a microchip to an animal. RF identification of animals requires that the bits transmitted by a transponder are interpretable...

non-traditional PAR systems use transponder multilateration, triangulation and/or trilateration. One such system, Transponder Landing System (TLS) precisely...

Telemetry transmitter No. 1 Telemetry transmitter No. 2 C-band transponder beacon S-band transponder beacon Ground facilities matching this capsule equipment...

special key cutting machines made for them. Transponder keys may also be called "chip keys". Transponder keys are automotive ignition keys with signal-emitting...

The Small Deep Space Transponder is a transponder designed by JPL specifically for deep space probes. It unifies a number of communication functions -...

a corresponding active transponder, independent of air traffic control, and warns pilots of the presence of other transponder-equipped aircraft which...

pedestrian crossing. A transponder system is a system which is always armed until a device, usually a small RFID transponder, enters the vehicle's transmitter...

automated radio transponder device. When the vehicle passes a roadside toll reader device, a radio signal from the reader triggers the transponder, which transmits...