[Elecraft] KI6WX ksb2 mods

[John, KI6WX]

He was referring to capacitors C173 and C174 and should have been more
specific in his write-up.  If you use the 2.5 kHz bandwidth, you may have to
play with L33 and those two values to get the desired tuning range.
Changing those values may also increase the injection voltage into U5 on the
KSB2 which could reduce the carrier suppression.
-John
 KI6WX

----- Original Message ----- 
From: "john rader" <kd5yty@yahoo.com>


> Thanks for the responses on my ksb2 mod questions.
> I have the crystals and caps for the 2.5kHz mod but want to know if any
other parts need to be modified as inicated in the text below.
>
> KI6WX writes the following;
> >Crystal filter bandwidth mod
> >The wider bandwidth filters require that the BFO be tuned to a higher
frequency for >receiving USB on the lower bands. For the 2.2 kHz bandwidth,
the BFO must be able to >reach 4916.5 kHz and for the 2.5 kHz bandwidth it
must reach 4916.8 kHz.It may be >possible to increase the maximum BFO
frequency in a K2 by removing turns off of L33 >or changing capacitor sizes
without raising the minimum frequency too high.
>
> Which capacitors is he referring to?
>
> John KD5YTY
> K2 #3982