Heathkit SB-10 Series Troubleshooting Manual page 31

4. NOTE: Be sure the VOX DELAY control is adjusted so the relays do not open after each
character is sent.
Set the MIC/CW LEVEL control to the minimum position that produces full output (Plate
current should be 225-250 ma).
Transmit Tuning and Operation revised 12/17/2021 Page 31