AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency
Michael A. Terrell wrote:
isw wrote:
That particular receiver doesn't have much of a "front end"; diodes
(with protection) and straight into the first mixer. No RF stage, tuned
or otherwise.
It can exceed the PIV of the protection diodes and cause them to
short, or explode. That crappy Sony design is where the harmonics came
from. The diodes, (or any other semiconductor) with enough RF can
generate a lot of spurious signals. It can even come from a rusty joint
in the area.
Is the ICF-SW7600GR significantly better performing
than the ICF-7600D on this?
gr, Hein
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