02-15-2021, 06:06 PM
Wouldn't fool with using the 2nd harmonic of anything these days your just asking for trouble. Try using a local station to set the bc osc. WMGW @1490kc is good for the high end. Tune the trimmer till the station is in the proper spot.
The easiest way is to use a counter and a loop around the mixer tube. This will give you a reading of the osc frequency as you set the trimmer. With a programmable one you can set it - out the IF offset set it read the direct frequency. When you do it this way there's no worry about images your looking as the osc and using math to know exactly where it needs to be.
The easiest way is to use a counter and a loop around the mixer tube. This will give you a reading of the osc frequency as you set the trimmer. With a programmable one you can set it - out the IF offset set it read the direct frequency. When you do it this way there's no worry about images your looking as the osc and using math to know exactly where it needs to be.
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
