During initial build I didn't have a signal generator and wasn't happy with the
band-pass filter alignment for the 12m and 17m bands which use trimcaps.
Revisiting the alignment with a newly acquired signal generator I found I
couldn't get a correct adjustment and removed C46 - it's maximum value
C23 values are listed in both the Manual and the
Revision as p/n 54, 8-50 pF.
Ted, KN1CBR
>Message: 29
>Date: Fri, 2 Oct 2015 08:28:07 -0400
>From: Don Wilhelm
>To: andrew , elecraft@mailman.qth.net
>Subject: Re: [Elecraft] [K2] Band-Pass Filter Trimcap values
&g
Andrew,
C21 and C23 are good with the ceramic capacitors with the red dot - use
those supplied with your kit.
C32 and C34 need approximately 25 pF to tune, and your current brown
trimmers should do the job nicely.
For C44 and C46 the capacity needed is approximately 10 pF (the brown
body trimm
Hello Don
Thanks very much for the useful information.
I was able to source some trimcaps with the correct pin-spacing and a nominal
range of 3 - 30pF.
The maximum values used bacame:
C21, C23, C32, C34 = 50pF
C44, C46 = 30pF
These resulted in all bands being easily tuned for peak output close to
Hello Ted
From your callsign I'm assuming your are in the USA, in which case I would
recommend sourcing any required parts direct from Elecraft. I'm in VK-land so
it was expedient to source locally.
The values I had success with are noted below, which tallies with the advice
from Don and the u
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