What sound is heard from an audio device experiencing RF interference from a CW transmitter?
On-and-off humming or clicking✓Bonne réponse
A CW signal at a nearly pure audio frequency
A chirpy CW signal
Severely distorted audio
Explication
A CW transmitter simply turns a carrier on and off, so after accidental rectification in the affected equipment the recovered result is the keying pattern itself. That is heard as buzzing, humming or clicking in step with the sending, not as a musical tone, because the audio device has no BFO.