02-07-2022, 09:56 PM
One the do not adjust trimmers are set up to set the ant sections for bands 1 and 2. The other one is for bands 3,4,and 5. Using one trimmer to set two bands 540kc to 4.0mc and the other to 3.5mc to 22mc is a little daunting.
As far as I know there isn't any alignment procedure for these. I do know that it's not a great idea to pick a frequency that you favor and peak it there. It screws up the image rejection some terrible.
I have thought about add 3 more trimmers to make each tuned circuit peak on each band. Now days trimmers are much smaller and would be easy to add.
If any of you have any insight into how adjust these two trimmers over such a broad range frequencies I would be interested to hear.
As far as I know there isn't any alignment procedure for these. I do know that it's not a great idea to pick a frequency that you favor and peak it there. It screws up the image rejection some terrible.
I have thought about add 3 more trimmers to make each tuned circuit peak on each band. Now days trimmers are much smaller and would be easy to add.
If any of you have any insight into how adjust these two trimmers over such a broad range frequencies I would be interested to hear.
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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