Enter a clue or pattern or both:
The Clue
Radar transmitter (5 letter answer)
The Answer
RACON
Tags
Notes
The answer RACON is so rare that it appears less than once every 2500 puzzles.
Definition
RACON as a noun:
1. (radar beacon, racon) = a device that, on receiving radar signals, transmits coded signals in response to help navigators determine their position