09-07-2020, 04:24 PM
3500 microvolts is a ridiculous amount of signal. A decent average sensitivity for a run of the mill 5 tube BC set will be around 40-100 microvolts. Would think if it was badly out of alignment maybe double that to start out to do the alignment.
Generally what I do is feed the the IF signal thru the grid of the mixer tube (with the generator set @ the IF frequency). Set the output level so I can just barely hear it. Adjust the IF for max speaker volume or minimum avc voltage. As it gets louder and louder I turn down the generator's level. Set the oscillator @ the top end of the BC band. Peak the ant trimmer.
GL
Generally what I do is feed the the IF signal thru the grid of the mixer tube (with the generator set @ the IF frequency). Set the output level so I can just barely hear it. Adjust the IF for max speaker volume or minimum avc voltage. As it gets louder and louder I turn down the generator's level. Set the oscillator @ the top end of the BC band. Peak the ant trimmer.
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
