[Elecraft] K2/100 power-out change

[Fred Jensen]

My TS-850 began doing this.  It started as just a small variation and
then finally got to be a steady pulsing.  The ALC reading was
synchronized with it.  Finally dropped the radio off at Kenwood when I
was in So Cal for the Cactus Intertie meeting.  Got it back within a
week (obviously they knew what to do ... the "what we fixed" memo and
old parts that came with it indicated it was in the ALC circuitry), and
it's been just fine ever since.  I'm in the final stretch of finishing
K2 4398 (LP CW only) and intend to have it with me at N6A during the Cal
QSO Party from Alpine County, the "If you want this county in your log,
we're the it" county (pop ~1,500 and no active hams).  We'll be running
more than 10W during the contest!

73,

Fred K6DGW
Auburn CA CM98

Larry Phipps wrote:
> 
> Interestingly, my TS850S does this too... it's a well known bug in the TS850. The Kenwood problem is in the ALC circuitry, new rigs don't do this... it develops over time.
> 
> I'm not familiar with the K2 circuit, but it sounds like it could be a decoupling problem.
> 
> Larry N8LP
> 
> ----- Original Message -----
> From: Rich McCabe
> To: Elecraft Reflector
> Sent: Wednesday, September 22, 2004 11:23 AM
> Subject: Re: [Elecraft] K2/100 power-out change
> 
> Sounds like both K2's I have had. 38xx and 44xx. The output jumps all over
> the place. My amp does not like it either. When I posted about it, the
> response I got was that is "normal".
> 
> Rich
> 
> ----- Original Message -----
> From: "David J Windisch" <davidw at copper.net>
> To: <elecraft at mailman.qth.net>
> Sent: Wednesday, September 22, 2004 5:17 AM
> Subject: [Elecraft] K2/100 power-out change
> 
> > Hi, all concerned:
> >
> > I have two K2/100's (34XX and 37XX) which have 40M c-w-mode power-out
> > variations at a rate of about once a second.  For example, if I set 40W
> > out,
> > they will alternate from 35 to 40W.   It happens on a dummy load, into an
> > antenna, and makes driving an amp interesting ;o)
> >
> > Haven't tried other bands or modes.
> >
> > Anyone else out there notice this?
> >
> > TIA & kind regards,
> >
> > Dave, N3HE
> >
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