Lookup Q-Codes
ACP-131 Q Signals
Grouped by Aeronautical, Marine and General use.
Amateur Radio Q Signals
Q Signals adapted for use in the Amateur Radio Service
FSD-218 QN Signals
ARRL QN Signals For CW Net Use
The Q-code
A standardized collection of three-letter codes all of which start with the letter "Q". It is an operating signal initially developed for commercial radiotelegraph communication and later adopted by other radio services, especially amateur radio.