interrogator-responsor

[ in-ter-uh-gey-ter-ri-spon-ser ]
/ ɪnˈtɛr əˌgeɪ tər rɪˌspɒn sər /

noun Electronics.

a radio or radar transceiver for sending a signal to a transponder and receiving and interpreting the reply.

Origin of interrogator-responsor

First recorded in 1945–50