What is the meaning of the procedural signal “CQ”?
A shortened form of the term “Contest QSO”
“Communication Quality,” used to indicate transmitted audio clarity
Only the called station should transmit
Calling any station✓Bonne réponse
Explication
CQ is the general call, an invitation for any station to reply, which is why it is used when you are not seeking one specific station. It is not an abbreviation for a contest term or an audio quality report.