As nouns the difference between sender and transponder
is that sender is broadcaster while transponder is a radio or radar transceiver that transmits some signal in response to receiving a predetermined signal.
sender
Antonyms
* addressee
* receiver
Anagrams
*
----
transponder
Noun
(
en noun)
A radio or radar transceiver that transmits some signal in response to receiving a predetermined signal.
See also
* identification friend or foe
----