[Elecraft] Strange K3's issues

[Kevin Stover]

Works fine at home and loses it's mind at the contest location with 
different antennas, feed lines, etc....
My first impression is an RFI problem at the contest location.

On 4/10/2016 4:17 PM, Tom SQ5CSF wrote:
> Hello everybody,
> I have a strange issues in my K3. Maybe someone has had similar symptoms and may help me...
>
> chronology of my actions with K3
>
> - from the begining K3 was never opened, worked fine.
> - 2015-06 - KXV3 installation
> - 144 QSO made in this period time - no issues.
> - 2015-12-31 Last firmware upgrade (5.38/1.25/2.86)
> - 26 QSO made in this period time - in January - no issues
> - SPDX contest (2016-04-02)- in my contest location - first operational problems.
> During the contest I have made about 40 qso.
> Many radio restart have been made to be able to work at all...
> symptoms: when I have pressed mic's PTT, TX led switch ON but there were no power output.
> The same situation was when I have used footswitch or playback message option.
> After few pressing of the PTT output power appeared.
>
> Next point was the AUT - time of the tuning was tottaly differen between next tunes.
> Next point - AF gain controls for main receiver.
> Radio was not reading the knob position to change the volume.
> Band change removed this issue for some time.
>
>
> - Home station - 2016-04-10
> Previous problems disappear, now i have a problem with the K3 power off.
> It's look like not complete internal procedure.
> whole firmwares were reloaded - issues still exist.
> configuration was restored from 2015-08 - issues still exist.
> Older firmwares were downloaded - issues still exist.
> Actual firmwares were downloaded with last saved configuration - issues still exist.
> - next point - when I switch on my Diamond power supply - K3 power on automatically.
>
>
> Some shots made by mobile You can have a look on vimeo:
> https://vimeo.com/162290764
>
> I will be grateful for any comments / tips
> Tom
> SQ5CSF
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-- 
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441


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