Enter a clue or pattern or both:
The Clue
Telephone-relay device (5 letter answer)
The Answer
CODER
Tags
Notes
The answer CODER is seen occasionally, appearing about once every 900 puzzles.
Related Clues
Cryptographer
Computer programmer
Hacker, maybe
Secret device
Spy's gizmo
Translating device
Enigma machine, e.g.
Java or C++ whiz
Microsoft employee, e.g.
Unit in a radar receiver
Many a software company employee
Pilot's signal-sending device
Definition
CODER as a noun:
1. (programmer, computer programmer, coder, software engineer) = a person who designs and writes and tests computer programs
COD as an adjective:
1. (collect, cod) = payable by the recipient on delivery; "a collect call"; "the letter came collect"; "a COD parcel"