[Elecraft] K3 Final Photos Added (Link)

[Alan D. Wilcox]

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.com
Williamsport, PA 17701 

------------------------------------------------------------------------
Brian Wood wrote:
> What was the problem?
>
> Brian, W0DZ
>
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] 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
>