Better cables may not be the answer. Most likely it is RF getting into the
transceiver via any of the cables connected to the rear connectors on the
transceiver. Key, audio in/out, PTT, power, speaker, etc etc. I'd suspect
that it is RF being radiated from the antenna that is being picked up. Is
the antenna for the band causing the problem closer to the radio than others
that do not cause the problem?
Additional bypassing on the inside rear at the connectors might work. Don't
over do it as excessive capacity could have a negative effect on the
required in and out signals. Start with .001 mf and work your way to .01 or
maybe a .05.
73
Bob, K4TAX
----- Original Message -----
From: "ERichard Roberts 3rd" <olesalty@adelphia.net>
To: <tentec@contesting.com>
Sent: Wednesday, September 24, 2003 7:29 AM
Subject: Re: [TenTec] Keying lockup problem continued
> Ken, I have had the same problem. Where are you getting the better cables
> from.
>
> Tnx
> Richard
> W1OS
> ----- Original Message -----
> From: "Ken Brown" <ken.d.brown@verizon.net>
> To: <tentec@contesting.com>
> Sent: Wednesday, September 24, 2003 4:28 AM
> Subject: [TenTec] Keying lockup problem continued
>
>
> > Hi all,
> >
> > I posted a message a few days ago about a problem with my Omni VI and
> > Titan getting locked in TX. The problem seems to be related to RF pickup
> > by the QSK control cables between the Omni and the Titan. I thought I
> > had solved the problem, only to have it happen again tonight. I am
> > expecting that better quality cables will solve the problem. Another
> > detail I discovered tonight is quite interesting: I turned on another
> > receiver to monitor my signal, heard my signal where it should be when I
> > key the Omni. When not keyed, and locked up by the RF into the QSK
> > cables problem (I presume) I did not hear my signal, even though the
> > Bird 43 wattmeter is indicating the same power output as when keyed. I
> > do not have a spectrum analyzer, or other way to quickly see where (in
> > frequency) the RF is, and I am certainly not going to let this continue
> > while I tune the other receiver around to find it. Better just to fix
> > it. Interesting though.
> >
> > Ken N6KB
> >
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
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