[Elecraft] K2 Filter Alignment with Spectrogram

[Phil Wheeler]

An old subject, to be sure.

I did the matched xtal mod, BFO mod and PLL thermister temp 
stabilization mod and set the filters at the default settings for the 
xtals (3.7 on envelope).

Sounded pretty good.  But since I had some free time, I finally build 
the noise generator kit I had on hand last night. This am I used it and 
Spectrogram to fine tune the filters in all modes.

It took only an hour and I did not change things all that much, but it 
made a world of difference  .. particularly for the narrower filter 
settings..

Info on all of this is available at the Elecraft website.

73, Phil