[Elecraft] (K3) Filter Set-up

[Bruce Beford]

In addition to the other suggestions you have received (assuming still no
signal through the filter), you may want to try the filter in another slot.
Early on, I had the same problem after installing a 250 Hz filter. the
problem ended up being a coupling cap on the circuit board with no solder on
one end. I was able to find it, and touch it up myself. Mine was a fairly
early unit (s/n 559).

 

GL,

Bruce

N1RX