Hope no one is bothered by me taking up so much 'bandwidth' on this forum.
What the heck is the purpose of L1 / 40 meters?
I see only scant mention "check" and "peak" watching driver bias...
1. how is it FIRST set?
2. what 'peak' to look for and what settings to do this?
3. where / how to look?
L1's inductance parallel resonates with tube and parasitic capacitances for enhanced signal levels from 40m and up.
Set BSW for 40 meters. Measure voltage across R6. Use a 7.295 Mhz crystal or VFO. Key transmitter and adjust 40 meter coil screw for max neg. voltage (bias) across R6.
Phil - AC0OB
