A transponder (XPDR, XPNDR, TPDR or TP) is an automated and electronic Monitoring Device that gets, cross examines, amplifies and retransmits incoming Signals. A transponder is likewise a Transceiver that generates reply indicators upon proper Digital exam.
The transponder time period is a mix of the words Transmitter and responder.
A transponder gets an interrogator sign and robotically transmits a radio wave signal at a predetermined frequency. BroadCast frequency signals, which are exclusive than obtained indicators, use a special frequency converter element for Broadcasting.
Each communication satellite channel is a transponder and has separate transceivers or Repeaters. Numerous audio and video channels might also skip via a unmarried transponder on a unmarried Wideband Carrier with virtual video statistics compression and Multiplexing.
The transponder was first used on plane throughout World War II as part of the Identification Friend or Foe (IFF) gadget. Transponders are nonetheless utilized in army and industrial aviation.
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