1) Communication circuit 2) Communications satellite 3) Electrical device 4) Electronic toll device
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https://www.crosswordclues.com/clue/transponder
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.
Found on
http://airodyssey.net/reference/glossary/
In telecommunication, a transponder is one of two types of devices. In air navigation or radio frequency identification, a flight 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 ...
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http://en.wikipedia.org/wiki/Transponder
[aeronautics] A transponder (short-for transmitter-responder and sometimes abbreviated to XPDR, XPNDR, TPDR or TP) is an electronic device that produces a response when it receives a radio-frequency interrogation. Aircraft have transponders to assist in identifying them on air traffic control radar; and collision avoidance systems have been...
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http://en.wikipedia.org/wiki/Transponder_(aeronautics)
[satellite communications] A communications satellite`s transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas. It is mainly used in satellite communication to transfer the received signals. A transponder is typically composed of: Most communication satellites...
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http://en.wikipedia.org/wiki/Transponder_(satellite_communications)
An airborne transmitter that responds to ground-based interrogation signals to provide air traffic controllers with more accurate and reliable position information than would be possible with "passive" radar; may also provide air traffic control with an aircraft's altitude.
Found on
http://www.aerofiles.com/glossary.html
Satellite receiver/transmitter unit receives uplink signals, which it amplifies and retransmits as a downlink signal back to earth.
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http://www.agbnielsen.net/glossary/glossaryQ.asp?type=alpha&jump=none
A device that transmits a response signal automatically when activated by an incoming signal.
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http://www.braeunig.us/space/glossary.htm
(from the article `satellite communication`) ...4 gigahertz, and the Ku band, with uplink/downlink frequencies centred on 14/11 gigahertz. In order to relay signals in these frequencies, a ... A telecommunications satellite is a sophisticated space-based cluster of radio repeaters, called transponders, that link terrestrial radio ... ...
Found on
http://www.britannica.com/eb/a-z/t/73
A radio or radar system that is triggered by a received signal. Transponders are important components of communications satellites and consist of a receiver, a frequency converter, and transmitter package. They have a typical output of 5-10 watts, operate over a 36-72 MHz bandwidth in the L-, C-, Ku...
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http://www.daviddarling.info/encyclopedia/T/transponder.html
equipment, part of a space station, which translates signals received within a defined frequency band to another frequency band and retransmits them after amplification and any specified signal processing
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=725-14-02
a beacon which is inert and is interrogated by a train running over it to transmit data to the automatic train protection system
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=821-08-16
Electronic device which combines a transmitter and a receiver.
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http://www.encyclo.co.uk/visitor-contributions.php
A transmitter on the satellite. Consider it like a reverse of your dish - a dish on the satellite sending a signal to you. There are 120 transponders on the old Astra satellites, 85 on the newer ones (the Sky ones). There isn't one satellite with 120 transponders on it. At 19.2°E (the old ones), you will find Astra 1B, 1C, 1D, 1E, 1F, 1G, 1H, and ...
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http://www.heyrick.co.uk/ricksworld/digibox/glossary.html
A transponder is a device that will emit a radio signal when it receives a radio signal on a certain frequency.
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http://www.probertencyclopaedia.com/browse/GT.HTM
a device for re-broadcasting from a satellite, data which has been sent up from a ground station. A transponder may be as simple as a receiver shifting the received signal to a different frequency followed by a power-amplifier. A typical broadcasting satellite will carry many transponders, with some spares to allow for in-orbit failure.
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http://www.satsignal.eu/wxsat/glossary.htm
It is a transmitter cum-receiver which receive radio signals and retransmits them automatically often at a different frequency after amplification.
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http://www.vidyagyaan.com/general-knowledge/science/glossary-of-physics-ter
[
n] - electrical device designed to receive a specific signal and automatically transmit a specific reply
Found on
http://www.webdictionary.co.uk/definition.php?query=transponder
Transponder 1. A radio transmitter-receiver that is activated when it receives a predetermined signal. RFID transponders come in many forms, including smart labels, simple tags, smart cards and keychain fobs. RFID tags are sometimes referred to as transponders. 2. A technical name for a tag.
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http://www.wordinfo.info/words/index/info/view_unit/3991/10
The electronics of a satellite that receives an uplinked signal from the earth, amplifies it, converts it to a different frequency and returns it to the earth.
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http://www.zoo.co.uk/~z0001325/Glossary.html
A specialised element of a satellite used to transmit and receive signals.
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https://www.encyclo.co.uk/local/20812
noun electrical device designed to receive a specific signal and automatically transmit a specific reply
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https://www.encyclo.co.uk/local/20974
An acoustic device that scientists place above the seafloor, usually in groups of two or more, to help them navigate deep submergence vehicles. To locate a transponder, a ping is broadcast from a ship to the seafloor. If the transponder hears the ping, it sends a reply ping, letting researchers know theyíre in the right place. The transponder and ...
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https://www.encyclo.co.uk/local/21343
A transmitter-receiver capable of accepting the challenge (radar signal) of an interrogator and auto
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https://www.encyclo.co.uk/local/22373
It is a satellite component that receives, modulates, amplifies, and re-broadcast a signal back to E
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https://www.encyclo.co.uk/local/22375
No exact match found.
