[Elecraft] [K2] lack of sensitivity...?

[Ron D'Eau Claire]

You used the correct capacitor for C22. See page 1 of the RF board parts
list. The value varies from 2.7 to 3.3 pf.

73, Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gil G.
Sent: Thursday, August 30, 2012 3:36 PM
To: Elecraft at mailman.qth.net
Subject: Re: [Elecraft] [K2] lack of sensitivity...?

Thank you everyone for your suggestions.

I did have one bad solder joint on TR7, fixed it by soldering one lead on
top. Maybe the problem is related to that.
Tuning L34 doesn't seem to do much of anything. There was no 3.3pf capacitor
for C22 on the RF board, but I had one 2.7pf left over after finishing, so I
assumed I had to use that..
I did try to compare the K2 with the K1 without the ATU, it does make a
difference, now it is closer (with preamp on). Maybe I'm being too picky. I
was assuming the K2 would run circles around the K1.
Don, what kind of additional data can I gather that would help make a
diagnosis?
I do not have an RF signal generator, but I have a K1 and a dummy load.
It is peculiar that the 20m band is the most affected. Could filter setting
be the cause?
I do have spectrogram on my iPod, but the interface is different than on the
PC version, not usable for filter adjustments.
(I use a Mac.)

Gil.
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