K2 - Variable Power Out

[k6dgw]

I know this has been discussed in the past, but due to the storms here
on the US West Coast, our wireless access is down and I'm relegated to
... gasp! ... dial-up, so surfing the archives is sort of a non-starter
right now.  One of the perils of living in rural areas, I guess.

My K2/100 has developed a variable power syndrome.  I set it at 50W, put
it in TUNE, and the power out is more or less 50W, but pulses up to
maybe 90W at fairly regular intervals of about 1 - 1.5 sec.  If I set
the power much above 50W, when it pulses up it resets, and I get the
"ELECRAFT" display.  Other than that, it all works find, TX and RX.

I thought it might be the 15A supply I was using so I put it on a 40A
supply built like a tank.  Still does is, scope says nothing is
happening to the power source.

I'll take all ideas.  I have a K3, so this isn't a disaster of any
proportion [in the ham radio sense], but I do use my K2.  If the winds
blow my antennas down, I won't be using either of them, unfortunately.

73,

Fred K6DGW
Auburn CA
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[Don Wilhelm-4]

Fred,

I certainly can't help with your internet access - but perhaps I can
help with your K2/100 problem.
Go to the Elecraft website and find the K2 Optional Power Control Mod -
or use the direct link http://www.elecraft.com/Apps/Power_Control_Mod.html.

If that does not help, you may have a problem with the KPA100 wattmeter
section.

73,
Don W3FPR

Fred Jensen wrote:

> I know this has been discussed in the past, but due to the storms here
> on the US West Coast, our wireless access is down and I'm relegated to
> ... gasp! ... dial-up, so surfing the archives is sort of a non-starter
> right now.  One of the perils of living in rural areas, I guess.
>
> My K2/100 has developed a variable power syndrome.  I set it at 50W, put
> it in TUNE, and the power out is more or less 50W, but pulses up to
> maybe 90W at fairly regular intervals of about 1 - 1.5 sec.  If I set
> the power much above 50W, when it pulses up it resets, and I get the
> "ELECRAFT" display.  Other than that, it all works find, TX and RX.
>
> I thought it might be the 15A supply I was using so I put it on a 40A
> supply built like a tank.  Still does is, scope says nothing is
> happening to the power source.
>
> I'll take all ideas.  I have a K3, so this isn't a disaster of any
> proportion [in the ham radio sense], but I do use my K2.  If the winds
> blow my antennas down, I won't be using either of them, unfortunately.
>
> 73,
>
> Fred K6DGW
> Auburn CA
> ______________________________________________________________
> Elecraft mailing list
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>
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