General › G4 Amateur Radio Practices › G4A11
G4A11
Why should the ALC system be inactive when transmitting AFSK data signals?
Pick an answer to check it.
Answer: B. The ALC action distorts the signal
AFSK data signals should be sent at a level below where ALC kicks in, because ALC action changes the signal level and distorts the signal. Distortion widens the signal and causes errors.
Tip: Keep ALC quiet on digital.