I'm not convinced that the drift might be an initial sign of the need for a
PTO rebuild. Those are needed when the grease dries up and gets gummy.
Signs of that are a warble when tuning -- particularly noticeable on CW --
and a sort of tuning backlash. It surely won't hurt to rebuild it but you
will not need the rebuild kit. Just ask on the reflector what sort of
synthetic grease the guys recommend.
73, Mike N4NT
----- Original Message -----
From: "Ed Worst" <edworst@att.net>
To: <n4nt_m_o_hyder@charter.net>
Sent: Tuesday, October 04, 2005 12:37 AM
Subject: Re: [TenTec] ARGOSY 525 PTO DRIFT?
Thanks for the suggestion, Mike, I've read about that also but never looked
into it. I think I will now, just as a possibility.
I was able to copy both PSK31 and MFSK16 on my old Argonaut without any
problem at all, so I think the linear PTO can work with digital modes. I
measured my PTO today, and got about +/- 20Hz drift after half an hour
warm-up from a cold start. I think I'll do the infamous PTO rebuild;
someone suggested that slight frequency drifting is the initial sign for
that.
Tnx es 73,
ed - k9ew
----- Original Message -----
From: "Mike Hyder -N4NT-" <n4nt_m_o_hyder@charter.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Monday, October 03, 2005 23:01 PM
Subject: Re: [TenTec] ARGOSY 525 PTO DRIFT?
> Hi, Ed--
>
> >From time to time somebody here raves about a frequency stabilizing
circuit
> that K4DPK sells. I've been waiting for someone to tell you about it.
>
> They call it the K4DPK VFO Stabilizer. You can learn more here:
> http://home.comcast.net/~k4dpk/
>
> I have not used it, know nothing more of it and have no pecuniary interest
> in the thing.
>
> Regards,
> Mike N4NT
>
> ----- Original Message -----
> From: "Ed Worst" <edworst@att.net>
> To: "QRP-L" <qrp-l@mailman.qth.net>; "TenTec Contesting"
> <tentec@contesting.com>; "TenTec List" <Tentec@mailman.qth.net>
> Sent: Sunday, October 02, 2005 11:52 PM
> Subject: [TenTec] ARGOSY 525 PTO DRIFT?
>
>
> I tried my Argosy 525 on MFSK tonight, and had to turn switch rigs because
> of the PTO drift. Is there a known problem with PTO drift on this rig?
If
> there is, what's the fix?
>
> Thanks,
> ed - k9ew
>
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