Heathkit SB-10 Series Troubleshooting Manual page 35

Figure 1. Driver Grid and Plate Coil Configuration
The driver grid and driver plate coils will be adjusted in the following steps. The coil
locations are marked on the shield cover at the bottom of the chassis. These coils must
be adjusted in the proper sequence as follows:
1. Adjust driver grid coil 3.5 and driver plate coil 3.5 for a maximum S-Meter indication. The S-
Meter will move slowly during the adjustment of these two coils
Change the setting of the front panel controls as follows:
DRIVER PRESELECTOR - 29.2 position (see Error: Reference source not found on page 33).
BAND - 29.0
Main Tuning dial (LMO) - 29.2 MHz
Turn the Main tuning dial back and forth around 29.2 MHz to get the loudest Signal.
Check for the calibrate signal by turning the DRIVER PRESELECTOR to see if there is any variation in
volume. Return the DRIVER PRESELECTOR to the 29.2 position.
Adjust driver grid coil 29 and driver plate coil 29 for a maximum S-Meter indication.
Change the setting of the front panel controls as follows:
DRIVER PRESELECTOR - 21.2 position (see Error: Reference source not found on page 33).
BAND - 21.0
Main tuning dial: 21.2 MHz.
Turn the Main tuning dial back and forth around 21.2 MHz for the loudest signal.
Check for the calibrate Signal by turning the FUNCTION switch to VOX and back to CAL again.
Adjust driver grid coil 21 and driver plate coil 21 for a maximum S-Meter indication.
Alignment Page 35