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

[tran(smitter) + (re)sponder.]


(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]


(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]


A receiver-transmitter which will generate a reply signal, upon proper interrogation. See also responsor.
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


[trænˈspɒndəʳ] Ntranspondedor m


n (Tech) → Transponder m, → Antwortsender m
References in periodicals archive ?
Table 59: Latin American Recent Past, Current & Future Analysis for Satellite Transponders by Application Areas - Broadcast, Trunking, Networking, and Reserve Markets Independently Analyzed with Annual Demand in Number of 36 MHz Transponder Equivalents for Years 2000 through 2010 (includes corresponding Graph/Chart) III-69
The purpose of this report is to provide quantitative and qualitative analyses of global demand for radio frequency identification (RFID) transponders.
CoreOptics current portfolio includes advanced 10Gbps and 40Gbps transponders for Metropolitan, Regional and Long Haul optical systems using DWDM, OTN, SONET/SDH, ATM and IP protocols.
DENVER -- Cable Operators Can Now Perform VoIP, Internet and Digital-Video Service Quality Loopback Tests to Transponders, and Query Them for Performance and Reliability Statistics
Founded in 2000, with HQ and sales office in Israel and an office in the US, Civcom Company leads the way in the field of dispersion tolerance transmission providing solution for some of the most progressive tunable and fixed transponders.
MONTREAL -- Cable MSOs Can Remotely Test and Assure Triple-Play Services Using Transponders in the HFC Network, for Troubleshooting, Monitoring and Fault Management
Minacom, the leading Service Level Test Automation(TM) provider to Cable MSOs, and AM Networks, the foremost provider of HFC plant monitoring systems announced today support for triple-play service validation using AM Networks' DOCSIS power supply transponders as remote test probes.
Within four hours after launch, all three transponders on the three spacecraft were confirmed to be operating nominally and supporting checkout functions.
today announced the availability of its third generation of fully tunable SURPASS(R) hiT 7500 optical transponders, with 10 gigabits per second capacity.
Here, our new generation of distortion tolerant transponders enabled by CoreOptics will become a benchmark in DWDM transmission.
1%, and the total number of leased transponders should exceed 4,950 in 2010, up from 4,125 as of the end of 2004.
Southeast Alabama Gas District is installing approximately 30,000 Transponders or meter interface units and new American Meter gas meters throughout their territory, which includes 14 member towns located in 32 communities.