What is the use of transponder ... ???
Asked by Manoj Joshi, 23 Oct '12 12:47 pm
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In telecommunication, a transponder is one of two types of devices. In air navigation or radio frequency identification, a transponder is a device that emits an identifying signal in response to an interrogating received signal. In a communications satellite, a transponder gathers signals over a range of uplink frequencies 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.Answered by always fresh, 23 Oct '12 12:48 pm
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