[Kenwood] TS850 Drift

Tue, 22 Oct 2002 08:00:43 -0700

Ok.  Thanks anyway.

It still has the original battery from 1995.  I don't suppose that would
have anything to do with it?

-----Original Message-----
From: Clif Holland [mailto:[email protected]]
Sent: Tuesday, October 22, 2002 10:25 AM
To: Brown, James E LRDOR
Subject: Re: [Kenwood] TS850 Drift

Have you considered a good exorcist???

Seriously I don't have any idea.

Clif Holland,  KA5IPF
AVVid
Authorized Kenwood and Icom Service
www.avvid.com
1-800-214-5779
972-554-6801
----- Original Message -----
From: "Brown, James E LRDOR" <[email protected]>
To: "'Clif Holland'" <[email protected]>
Cc: <>
Sent: Tuesday, October 22, 2002 9:16 AM
Subject: RE: [Kenwood] TS850 Drift

> The displayed frequency is moving.  Apparently, the actual frequency is
> moving as well.  At least, the receive frequency is actually moving, since
> when I move the tuning knob to re-set the frequency back to where I
> orginally had it, the pitch of the received RTTY tones changes and I see
an
> indication of the retuning on the KAM+ TNC tuning LEDs.  This means that
the
> receive frequency actually HAS drifted.  As far as the Xmit frequency,
> there's no way I can tell if it drifted also (but I assume it has).  We
are
> talking about a very small amount here, and would not be noticeable on the
> other station's end during a brief contest QSO.
>
> I tried switching to VFO B, and it does the same thing there as well.
>
> The RIT control functions normally.
>
> If I leave the rig in receive only, and don't Xmit, I don't see the drift.
>
> -----Original Message-----
> From: Clif Holland [mailto:[email protected]]
> Sent: Tuesday, October 22, 2002 9:53 AM
> To: Brown, James E LRDOR
> Subject: Re: [Kenwood] TS850 Drift
>
>
> Is the displayed freq moving or just the transmit freq???
>
> Clif Holland,  KA5IPF
> AVVid
> Authorized Kenwood and Icom Service
> www.avvid.com
> 1-800-214-5779
> 972-554-6801
> ----- Original Message -----
> From: "Brown, James E LRDOR" <[email protected]>
> To: "'Clif Holland'" <[email protected]>
> Cc: <[email protected]>
> Sent: Tuesday, October 22, 2002 7:30 AM
> Subject: RE: [Kenwood] TS850 Drift
>
>
> > Clif,
> >
> > Thanks for the response.
> >
> > I wasn't using a bug.  I was using FSK mode in the RTTY contest. The PC,
> > contesting software and TNC were keying the TS850 directly.
> >
> > Anyway, I thought about stray vibrations moving the knob, since it is
set
> > with very light friction.  So I engaged the F. Lock.  However, the
problem
> > continued.
> >
> > NR1DX has suggested that RF may be getting into the "up/down" control
> lines
> > that a microphone with up/down buttons uses to control frequency.  I
don't
> > have an up/down mic (like the MC-60) attached ( I have a Heil), but
maybe
> > that makes no difference.  He suggests ferrites on the mic cord.
> >
> > W1ZC suggests faulty -8 & +8 vdc regulators (7808s) on the main
regulator
> > board.
> >
> > Do you have any advice?
> >
> > Thanks Jim   W4LC
> >
> >
> > -----Original Message-----
> > From: Clif Holland [mailto:[email protected]]
> > Sent: Monday, October 21, 2002 8:20 PM
> > To: Brown, James E LRDOR
> > Subject: Re: [Kenwood] TS850 Drift
> >
> >
> > The side to side motion of the bug caused the knob to turn. Tighten the
> > friction setting...
> >
> > Clif Holland, KA5IPF
> > We have moved, do you have the new address??
> > AVVid
> > Authorized Kenwood and Icom Amateur Service
> > www.avvid.com
> > 1-800-214-5779
> >
> >
> > ----- Original Message -----
> > From: "Brown, James E LRDOR" <[email protected]>
> > To: <[email protected]>
> > Sent: Monday, October 21, 2002 7:31 AM
> > Subject: [Kenwood] TS850 Drift
> >
> >
> > > While operating in the JARTS RTTY contest this weekend, I noticed a
> slight
> > > drift in my frequency.
> > >
> > > This change was very small and seemed to happen only on transmit, e.g.
> If
> > I
> > > was CQing on 14.082, it would change to 14.081 then 14.080 then 14.079
> > etc.
> > > at the rate of about one change per minute or so.  Always downward.
> > >
> > > This was a real change in frequency, not just a change in the display.
> > All
> > > other operations seem normal.
> > >
> > > Any advice appreciated.
> > >
> > > Thanks      Jim      W4LC
> > >
> > >
> > >
> > >
> > >
> > >
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