Brian,
Problem: Receive was intermittent, transmit was no output along with ERR
TxG.
Turned out that it was the chip resistor providing voltage to VCO
amplifier Q3 in the synthesizer. One end of the resistor hadn't reflowed
right (solder hadn't wicked up the end), and it was open circuit, even
though it looked OK. Even under strong magnification it wasn't obvious.
So the synthesizer usually wasn't putting out enough for the mixer. The
mixer would work sometimes, then sometimes not. One touch of the
soldering iron, and the VCO output was up over a volt, and the mixer was
happy.
Credit and thanks to Gary, and finally to Wayne, for helping me track
this one down. It was an interesting challenge!
Alan
Alan D. Wilcox, W3DVX
570-321-1516
http://WilcoxEngineering.comWilliamsport, PA 17701
------------------------------------------------------------------------
Brian Wood wrote:
> What was the problem?
>
> Brian, W0DZ
>
>
> -----Original Message-----
> From:
[hidden email]
> [mailto:
[hidden email]] On Behalf Of Alan D. Wilcox
> Sent: Tuesday, December 11, 2007 3:09 PM
> To: elecraft
> Subject: [Elecraft] K3 Final Photos Added (Link)
>
> Hello,
>
> I just put the last several K3 pix on site ...
>
http://wilcoxengineering.com/K3sn40.aspx>
> It's finally done! :-)
>
> Cheers,
> Alan
>
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