[Elecraft] KBPF3 usefulness or effectiveness?

[James Sarte]

Hello Elecrafters,

When I assembled my K3 I installed the KBPF3 module in the sub receiver
figuring that I'd use the sub for SWL.  However, I was thinking about moving
it back to the main receiver in order to take full advantage of the
synchronous AM detection feature.  What I noticed though was that I can't
really seem to tell if the KBPF3 makes a difference when listening to
out-of-band stations.

For example, tuning around tonight I came across a strong SW station on 7505
KHz.  Logic tells me that the sub receiver's AF output should be
significantly clearer, perhaps louder, than that of the main receiver.
Going back and forth between them doesn't seem to show any differences in
perceived audio quality though.

So, I'm curious now if there are any tests I can perform that would
demonstrate the effectiveness of the KBPF3 module.

Thank you for your valued input.

Vy 73 de James K2QI

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73 de James K2QI