[Elecraft] K3 Birdies

[David Gilbert]

The software fix works extremely well.  I haven't found a single birdie 
yet that I couldn't handle.  Done properly, they go completely away.

I'm curious, though ... did adding the KRX3 accentuate the birdies 
compared with how it was before you added it? 

I built my K3 and installed the KRX3 all at once before I checked for 
birdies so I don't have a comparison, but I have suspected that there 
are stronger birdies with the KRX3 than without it.  The most obvious 
reason would be the additional TMP cables, but I'm not sure that's the 
culprit.   I half suspect that the shield of the KRX3 (which does an 
excellent job for the KRX3) couples signals to the main receiver.  I 
used a wide flat blade screwdriver to short the shield of the KRX3 
shield to the case while monitoring the birdies, and I found that the 
birdies were VERY sensitive to where on the KRX3 shield I did that.  
It's possible that the screwdriver blade was acting as sort of an 
antenna, but I doubt it since the birdies always decreased in strength 
when I found  the right spot ... I never found a spot where the birdies 
increased in strength as a result of my playing with the screwdriver.

73,
Dave   AB7E



Robert Dorchuck wrote:
> I recently installed the KRX3 and seem to have some of the birdie problems
> others have noted, the loudest on 14.186.7 (S3).  The others are masked
> when connected to an antenna and are not a problem.
>  
> I have tried adjusting the cables and saw some improvement but it will
> not be a solution as Wayne noted.  Has anyone tried the test firmware
> that Wayne mentioned a week or so ago?
>  
> Thanks all,
> Bob  W6VY
>  
>  
> ------------------------------------------------------------------------
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.qth.net/pipermail/elecraft/attachments/20090220/cf98915f/attachment.html