spark-gap transmit-receive tube

spark-gap anti-TR tube

spark-gap TR tube

spark-gap tube

anti-transmit-receive switch (ATR)

ATR switch (anti-transmit-receive switch)

transmit-receive box

transmit-receive cell

Ground Air Transmit Receive (GATR)

Ground Antenna Transmit and Receive (GATR)

transmit (Tx) and receive (Rx) (levels, protocols, etc.)

spark extinguishing / spark-extinguishing

constricted air gap spark plug

distributor vacuum spark control tube

A tube / A-tube

transmitting-receiving tube (TR tube)

transmit beam

transmit pulse

transmit (Tx)

Listen Before Talk (LBT) / Listen Before Transmit

miniature receive terminal

receive fire

receive an attack

receive casualties

receive one's commission

receive the Queen's commission

receive mauling

clear / cut a gap

electric spark

exploit a gap

fill / plug the gap

gap marker

gap-filler radar