Unfortunately it could be both! At the end of a dipole is very high
voltage and if it hangs close to the vicinity of your shack, it
could induce RFI. Same thing for feed line, every odd quarter
wavelength is a high voltage point (assuming a dipole), so if your
feedline is an odd quarter wave length at the frequency your
operating, and that is in your shack, chances of RFI are pretty
good. With feed line however, if that is the problem, it can be
pretty easily fixed by just changing feed line length.
73,
Tom - W4BQF
----- Original Message -----
From: "Mike Brown" <k9mi@sbcglobal.net>
To: <eric.sensi@skynet.be>; <tentec@contesting.com>
Sent: Sunday, December 12, 2004 5:56 AM
Subject: Re: [TenTec] Orion Mic Woe's
In cases like this, where one antenna causes RFI problems, and
another one doesn't, antenna location is more then likely the
problem then anything else.I've often wondered when feedline
radiation is blamed as a source for RFI, is this really the case,
or is this simply a matter of having an antenna too close to a
transmitter.
Mike, K9MI
----- Original Message -----
From: "Eric SENSI" <eric.sensi@skynet.be>
To: <tentec@contesting.com>
Sent: Saturday, December 11, 2004 20:01 PM
Subject: RE: [TenTec] Orion Mic Woe's
Well,
It is suggested to verify some things, but rewiring the mic is
not mandatory
IMO.
I have a serious RF problem with my G5RV wire antenna and I think
I'll drop
down this antenna tomorrow if I can, I own several models of wire
antenna
that I could swap to see if my problems could not be cured that
way.
Stand-by everybody for the time being, I'll try another antenna
configuration as soon as possible.
40m => okay
20m => can't work on this band
15m => can't work on this band
10m => okay
On the vertical antenna R7, everything is okay on all bands.
On the dummy load, it's okay too, so I think the G5RV and the
radio shack at
the 2 floor is the problem.
I have no other mike to connect to the Orion, the 706 is the only
one.
I'll try to do my best to cure this because I wanted to keep my
Orion.
73's, ERic.
-----Message d'origine-----
De : tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]De la part de W4ABW@aol.com
Envoye : samedi 11 decembre 2004 20:36
A : tentec@contesting.com
Objet : Re: [TenTec] Orion Mic Woe's
Am I reading all this right ? If you buy the Orion and the
matching mic, you
need to re-wire the radio or mic before it will work properly ?
Tnx
Al
W4ABW
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