[Elecraft] K2 filter attenuation

[Rich Lentz]

Back to the original subject - 

I also hear and see (with spectrogram) a noticeable drop in signal (in
excess of 10 db) on the narrowest filter.  I am positive the filter is
properly aligned, and this happens on normal, reverse, USB, and LSB. My
filter numbers are almost the same as that in the manual, with a slight
difference for a 750 Hz CW tone. The same decrease is also shown with
the noise generator on the narrowest filter.  I cant believe it is
"tuning" or the filters are "miss tuned," I might believe there is an
improper component or miss-wiring that I can't find. But I have checked
each component at least 8 times (counting the four times that I checked
every part when the K2 was built. The level matches the other filters
when it is as wired as the other filters which makes me believe there is
no incorrect components or miss-wiring.

As the first question in this thread "Any suggestions?"


Rich

KE0X