[TenTec] RFI question for Orion and other TT rigs

Tue Jun 28 11:27:59 EDT 2005

I built the kit - works great, but winding that torid was a bear for my old
hands.

Dave
K5WNV
----- Original Message ----- 
From: "Bill Rowlett" <kc4atu at hotmail.com>
To: <tentec at contesting.com>
Sent: Tuesday, June 28, 2005 10:07 AM
Subject: Re: [TenTec] RFI question for Orion and other TT rigs

> TT has one too in a kit.
>
> Bill  kc4atu
>
> >From: "Scott Harwood" <scotth at hsc.edu>
> >Reply-To: scotth at hsc.edu,Discussion of Ten-Tec Equipment
> ><tentec at contesting.com>
> >To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> >Subject: Re: [TenTec] RFI question for Orion and other TT rigs
> >Date: Tue, 28 Jun 2005 10:48:07 -0400
> >
> >MFJ makes a counterpoise tuner.  I use it while in Florida in the winter
> >from a 3rd story condo.  I had TVI & telephone problems until I got one.
> >Works great with 30 ft. wire around baseboard.  No more problems.
> >Scott K4VWK
> >---------- Original Message ----------------------------------
> >From: "GARY HUBER" <glhuber at msn.com>
> >Reply-To: Discussion of Ten-Tec Equipment <tentec at contesting.com>
> >Date:  Tue, 28 Jun 2005 09:38:58 -0500
> >
> > >And I'm not commenting on any issue but the counterpoise to move the RF
> >high voltage point off the equipment in the shack. I have addressed
audio,
> >lightning, RF, and protective AC grounding on a professional basis....
went
> >to the commercial schools, did the work, and take care of my own
equipment.
> >But I did not see anyone else suggesting the counterpoise solution. By
the
> >way I believe there was a commercial "RF ground Tuner" marketed a few
years
> >ago..... well maybe more than a few years. It'd do about the same thing
> >which is to take the RF high voltage point off the equipment.
> > >
> > >Gary - AB9M - www.csm-gh.com<http://www.csm-gh.com/>
> > >  ----- Original Message -----
> > >  From: Tommy<mailto:aldermant at alltel.net>
> > >  To: Discussion of Ten-Tec Equipment<mailto:tentec at contesting.com>
> > >  Sent: Tuesday, June 28, 2005 9:10 AM
> > >  Subject: Re: [TenTec] RFI question for Orion and other TT rigs
> > >
> > >
> > >  I'm certainly not disagreeing with Gary...BUT
> > >
> > >  What is THE most important part of your ham radio system? In my
> > >  opinion, it's your antenna. Why not build your antenna carefully and
> > >  correctly to begin with, then buy your expensive radio's of your
> > >  choice. It seems to me that if you follow the simple suggestions in
> > >  the ARRL Handbook and design your antenna system so it is NOT some
> > >  odd quarter wave length into your shack, you probably will not ever
> > >  have to deal with the RFI issue at all? Isn't that why that
> > >  information is in the Handbook?
> > >
> > >  In my short and active 53 years in the hobby, the ONLY time I ever
> > >  had an RFI problem was when I had one end of my 80m dipole directly
> > >  over the top of my house. Any power output greater than 500w and my
> > >  Hercules amp would just go nuts! The ONLY solution necessary was to
> > >  move the antenna about 10' further away from the house. I learned
> > >  that little lesson by experience. Building a ham station that works
> > >  well requires a little bit of knowledge and a LOT of common sense.
> > >
> > >  BTW, when your having 'strange' problems with a Ten Tec rig, one of
> > >  the first things that Paul Clinton will ask you is "where is your
> > >  antenna located?"
> > >
> > >  Tommy - W4BQF
> > >
> > >  At Tuesday 08:45 AM 6/28/2005, GARY HUBER wrote:
> > >  >One "easy" way to reduce the "RFI in your shack" is the old time
> > >  >counterpoise. Just a quarter wave length of wire for each band,
> > >  >connected at the ground post of your transceiver and then strung out
> > >  >along the baseboard. I've used a multi-conductor cable, like rotor
> > >  >cable, all conductors soldered together at the termination, but with
> > >  >each conductor a different quarter wave length and the excess wire
> > >  >removed. It works even when the ground rod below the desk doesn't.
> > >  >
> > >  >73,
> > >  >
> > >  >Gary - AB9M
> > >  >   ----- Original Message -----
> > >  >   From: Tommy
> >Alderman<mailto:aldermant at alltel.net<mailto:aldermant at alltel.net>>
> > >  >   To: 'Discussion of Ten-Tec
> >Equipment'<mailto:tentec at contesting.com<mailto:tentec at contesting.com>>
> > >  >   Sent: Saturday, June 25, 2005 9:52 PM
> > >  >   Subject: Re: [TenTec] RFI question for Orion and other TT rigs
> > >  >
> > >  >
> > >  >   Roy,
> > >  >
> > >  >   One of the best and easiest ways to avoid "RF in your shack" is
to
> >make
> > >  >   sure that one half the length of your antenna plus the total
length
> >of
> > >  >   your feed line is NOT an odd quarter wavelength long. The reason
> >for
> > >  >   that is if that total is an odd quarter wavelength, you will have
a
> > >  >   maximum voltage field in your shack. The second most easiest
thing
> >to
> > >  >   avoid is do not let the end of any of your antennas terminate
> >directly
> > >  >   over your shack, as that too, is a high voltage field point.
> > >  >
> > >  >   Tommy - W4BQF
> > >
> > >
> > >  _______________________________________________
> > >  TenTec mailing list
> > >  TenTec at contesting.com<mailto:TenTec at contesting.com>
> > >
>
>http://lists.contesting.com/mailman/listinfo/tentec<http://lists.contesting
.com/mailman/listinfo/tentec>
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> > >
> >
> >
> >
> >
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