A devise that automatically transmits sonar signals when actuated by a specific sonar signal from an interrogator Transponders are used to mark or track objects or sites underwater They are programmed to be in a continuous passive (listening) mode until they receive a valid signal from a transponder interrogator
Equipment in a satellite which receives a single uplinked channel from a satellite Earth station; amplifies it, converts the frequency and changes the polarisation; then rebroadcasts it back to Earth
A small radio transmitter that fits in the car to help race directors count laps during races Many permanent tracks use transponders at their facilities Most tracks that are starting out cannot afford the high cost of a transponder setup, so they will use a computer keyboard and fast finger-punching to record lap times
A device on a communication satellite that receives signals from Earth, alters their frequency, amplifies them, and retransmits them to Earth on a different frequency
A piece of equipment which, when set upon a specific radio frequency, emits a directional signal of its own and enables the reciever to track or monitor the vehicle's location
In satellite communication, a transponder receives the transmission from the earth (uplink), amplifies the signal, changes frequency, and retransmits the data to a receiving earth station (downlink)
An electronic device mounted to the kart, which triggers an external (track side) mechanism each time you cross a certain point on the racetrack Some organizations use transponders to automate their timing and scoring systems, enabling them to accurately determine the starting grid in qualifying Personal systems are also available
A combination receiver, frequency converter, and transmitter package, physically part of a communications Satellite Communications Satellites typically have between 12 and 24 onboard transponders although the INTELSAT VI at the extreme end has 50
The airborne radar beacon receiver/transmitter portion of the Air Traffic Control Radar Beacon System (ATCRBS) which automatically receives radio signals from interrogators on the ground, and selectively replies with a specific reply pulse or pulse group only to those interrogations being received on the mode to which it is set to respond
Electronic package aboard a telecommunications satellite that 1) receives transmissions from earth (uplink); 2) changes signal frequency; 3) amplifies the signal; and, 4) transmits the signal to earth (downlink) Modern communications satellites use 24 or more transponders and can be C-Band, Ku-Band, or both (See also: C-Band, Downlink, Ku-Band, Satellite, Uplink)
– an electronic tag mounted on a license plate, built into a vehicle, or placed on the dashboard The tag is read electronically by an electronic tolling device that automatically assesses the amount of the user fee
An electronic device that "responds" to interrogation by ground-based radar with a special four-digit code that specifically identifies the aircraft on which it is located Certain transponders have the ability to transmit automatically the altitude of the aircraft in addition to the special code
equipment on board a satellite including the antenna, receiver and transmitter that receives and retransmits a signal ETV's transponder is located on the Telstar 401 satellite
a satellite component that receives communication signals from earth's surface and the frequency conversion, amplification and retransmission of signals back to earth
The FasTrak transponder is a small battery-powered radio device, which is mounted inside the vehicle on the windshield and identifies the customer's prepaid toll account When traveling through the toll zone, the transponder is read by an overhead antenna, and the posted toll amount is automatically deducted from the customer's account The transponder can be easily moved from one vehicle to another
Airborne receiver/transmitter portion of the SSR* system which receives the interrogation signal from the ground and automatically replies according to mode and code selected Modes A and B are used for identification, using a four-digit number allocated by air traffic control Mode C gives automatic altitude readout from an encoding altimeter
An instrument used on communications satellites that receives a signal from a station on Earth at one frequency, amplifies it, and shifts it to a new frequency
transponders
Türkische aussprache
tränspändırz
Aussprache
/transˈpändərz/ /trænsˈpɑːndɜrz/
Etymologie
[ tran(t)-'spän-d&r ] (noun.) circa 1944. transmitter + responder.