04-03-2019, 09:21 AM
>The primary and secondary ohm values are a bit off,
Doesn't matter at all but the resonant frequency does. According to the diagram the original as those two caps and resistor in it too aka avc filter. IF coils generally are a different animal by comparison to rf coils. A lot more turns as the frequency is much lower and different wire (litz) to develop higher Q. Physical size and placement are somewhat critical too as it can effect the gain and selectivity.
Doesn't matter at all but the resonant frequency does. According to the diagram the original as those two caps and resistor in it too aka avc filter. IF coils generally are a different animal by comparison to rf coils. A lot more turns as the frequency is much lower and different wire (litz) to develop higher Q. Physical size and placement are somewhat critical too as it can effect the gain and selectivity.
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
