08-10-2017, 03:57 PM
The 20 was a US built set the 20A is Canadian. In CA the AC line power was 25cy not 60cy like we have here in the states. Being the the power is a different frequency it calls for a larger power transformer and a different sized filter cap to filter out the 25cy hum. That's the short answer.
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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