07-26-2019, 08:53 PM
Steve,
From what I can gather on the two mystery trimmers (#6&7) 6 is part of a broad banded tuned circuit that covers bands 3,4,and5. The same for #7 but it's for bands 1&2. There probably won't be a sharp peak at any particular frequency with these two. I suppose you could try to see if there is any increase if they are adjusted at the center frequency of the two groups of frequencies. #7 around 1500kc and #6 around 10mc.If they did "drift" as you mentioned it's such a broad range it probably will be pretty negligible. Would use a good generator with a calibrated output in microvolts so you can track your progress.
GL
From what I can gather on the two mystery trimmers (#6&7) 6 is part of a broad banded tuned circuit that covers bands 3,4,and5. The same for #7 but it's for bands 1&2. There probably won't be a sharp peak at any particular frequency with these two. I suppose you could try to see if there is any increase if they are adjusted at the center frequency of the two groups of frequencies. #7 around 1500kc and #6 around 10mc.If they did "drift" as you mentioned it's such a broad range it probably will be pretty negligible. Would use a good generator with a calibrated output in microvolts so you can track your progress.
GL
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
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