K2 with XV50 and XV144

[David Heinsohn]

I have a problem, though I think it's minor, but irritating.

I have both of the above transverters.  They are plugged into the K2 per
the manual with the K60XV.  I was experiencing IF Overload as described
on page 17 of the Owners manual,  all LEDs flashing, when sending CW.  I
changed JP1 to the 200 ms second delay which helped but did not fully
solve the problem.  Any ideas whats causing this?  Oh, my logging
program reads the K2 for various inputs on the same cable as the xverter
cable.

Thanks for the inputs,
I want a KX3 for KB4WYR!!

David


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[Don Wilhelm-4]

  David,

On some XV transceivers, the "COR" is too sensitive, and in some cases I
have been able to attribute it to RF getting back into the
microprocessor on the front panel board.

Try putting a bypass capacitor (.001 uF) between the collector and
emitter of Front Panel Q7 and see if that cures it.

73,
Don W3FPR

On 5/22/2011 11:41 PM, David Heinsohn wrote:

> I have a problem, though I think it's minor, but irritating.
>
> I have both of the above transverters.  They are plugged into the K2 per
> the manual with the K60XV.  I was experiencing IF Overload as described
> on page 17 of the Owners manual,  all LEDs flashing, when sending CW.  I
> changed JP1 to the 200 ms second delay which helped but did not fully
> solve the problem.  Any ideas whats causing this?  Oh, my logging
> program reads the K2 for various inputs on the same cable as the xverter
> cable.
>
> Thanks for the inputs,
> I want a KX3 for KB4WYR!!
>
> David
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1375 / Virus Database: 1509/3654 - Release Date: 05/22/11
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

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[Boris Sapundzhiev]

Hello and thanks for the post.. I experienced the same issue with my XV144 transverter. Collector-emitter bypass capacitor didn't work for me because activated overload protection on startup. I soldered the capacitor directly on base-emitter of Q7. This cured the problem 100%.
73's
LZ2JR Boris