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A radio or radar transmitter-receiver activated for transmission by reception of a predetermined signal.

[tran(smitter) + (re)sponder.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(trænˈspɒndə) or


1. (Telecommunications) a type of radio or radar transmitter-receiver that transmits signals automatically when it receives predetermined signals
2. (Broadcasting) the receiver and transmitter in a communications or broadcast satellite, relaying received signals back to earth
[C20: from transmitter + responder]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(trænˈspɒn dər)

a radio, radar, or sonar transceiver that automatically transmits a signal upon reception of a designated incoming signal.
[1940–45; trans (mitter) + (res) ponder]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


A receiver-transmitter which will generate a reply signal, upon proper interrogation. See also responsor.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.transponder - electrical device designed to receive a specific signal and automatically transmit a specific reply
electrical device - a device that produces or is powered by electricity
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[trænˈspɒndəʳ] Ntranspondedor m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


n (Tech) → Transponder m, → Antwortsender m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
'This post is a description of the software I am using for the narrowband transponder. The main idea for my narrowband transponder solution is that the BeagleBone Black will just run some software which controls the LimeSDR Mini and streams IQ samples using Ethernet to and from another computer where all the heavy duty work is done,' Estevez explains.
International Civil Aviation Organization (ICAO) transponder data recorded the flight code 7270C2 for the aircraft.
APAC is likely to be the fastest growing drone transponder market over the forecast period.
1, 2018, for I-PASS customers who repeatedly cruise without transponders after the Illinois tollway began fining transgressors.
The transponder can be installed on any vessel classification from the biggest used by cargo companies to the smallest fishing boat used by fishermen.
Edgecore Networks, the provider of open networking, has announced the general availability of its Cassini open packet transponder, the industry's highest capacity and first modular whitebox packet transponder offering a flexible mix of 100 Gigabit Ethernet (GbE) packet switching ports and 100/200 Gbps coherent optical interfaces for data center interconnect and service provider optical network use cases, the company said.
Like many who are doing ADS-B upgrades, I lucked out because the transponder antenna is the same as the one that was already installed on the bottom of the airplane--a blade-style L-band antenna.
Congressional mandate requires US armed services to upgrade their aircraft with NATO Mode 5 technology, but small unmanned aircraft struggle to carry heavy legacy transponders that weigh as much as 10 lbs.
Cancer care solutions company Varian (NYSE:VAR) reported on Friday the receipt of the US FDA 510(k) clearance for its Calypso Anchored Beacon transponder to help clinicians deliver treatment to lung tumour patients with increased confidence and accuracy.
Based on the transponder, and scales embedded in the freeway, drivers receive either a green light to continue driving or a red light indicating they must report to the weigh station for closer inspection.
The passive wireless power and data transmission between the transponder and the reader are based on the inductive coupling mechanism.