09-19-2017, 12:59 PM
Hi Dave and welcome,
As a troubleshooting measure I'd loose couple a frequency counter to the oscillator. Frequency received or dial frequency = oscillator frequency - 455kc.
It's important that the osc is running above the incoming signal rather than below.
Have you check the XXL/7A4 osc tube, it may be weak causing the osc to die out at hf.
GL
As a troubleshooting measure I'd loose couple a frequency counter to the oscillator. Frequency received or dial frequency = oscillator frequency - 455kc.
It's important that the osc is running above the incoming signal rather than below.
Have you check the XXL/7A4 osc tube, it may be weak causing the osc to die out at hf.
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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