Hi David ,
I have summarized your valuable advice
about the WARC bands of the Heathkit SB-220.
1) On 12m, set the band switch to 10m
2) On 17m, set the band switch to 15m
3) On 30m, set the band switch to 20m
How to operate the Load and Plates
1)Set the load control to maximum capacitance.
2)Apply about 10 watts of drive.
3)Rotate the tune control to find a dip in anode current or a peak in
power output on the external power meter.
4)Adjust the load control for maximum power output.
5)Gradually increase the drive while adjusting the tune and load
controls for maximum power output at each drive level.
6)Repeat the procedure up to 100 watts of drive
Thank you
Kouichi Ueno Ji1FGX/DU9
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