[Elecraft] Comment on 2nd filter mod

[John, KI6WX]

Todd;
The final version of the mod should produce a very flat response.  See
http://home.pacbell.net/johngreb/modifications_to_the_ksb2.pdf for graphs of
the measured response of the second Xtal filter with the various changes.
-John
 KI6WX

----- Original Message -----
From: "Todd Gahagan" <tgahagan@imt.net>


> Well, after changing all the crystals and up grading the 2nd filter mod to
> the latest specs I honestly don't see much fattening of the filter when
> viewed with Spectrogram.  I have checked the voltage on the transistor in
> the mod and it is working properly.  I have changed the cap from 120 pf to
> 100 pf.  Maybe I'm expecting too much but in looking at another K2 that
has
> the mod without the crystal change I'm finding that mine does not look
> nearly as flat.  Just a comment and wondering what to try next.  Thanks,
> Todd-WA7U