From: "Scott Harwood" <scotth@hsc.edu>
Reply-To: scotth@hsc.edu,Discussion of Ten-Tec Equipment
<tentec@contesting.com>
To: Discussion of Ten-Tec Equipment <tentec@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@msn.com>
Reply-To: Discussion of Ten-Tec Equipment <tentec@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@alltel.net>
> To: Discussion of Ten-Tec Equipment<mailto:tentec@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@alltel.net<mailto:aldermant@alltel.net>>
> > To: 'Discussion of Ten-Tec
Equipment'<mailto:tentec@contesting.com<mailto:tentec@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
>
>
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