Chris,
What was REALLY surprising is that the dummy load was a Heath Cantenna!
The radio was grounded, and so was the coax. That would make one
"think" that the dummy WOULD be grounded.
That particulat QTH showed me some WEIRD effects dealing with
grounding. I had a dipole up around 75 feet or more. Big 120ft Oak
trees helped a LOT!
I put up a new dipole and new RG-213 feedline. Strange thing was
that the VSWR was horrible when all the way up. The final solution was
a run of #12 AWG insulated wire run from the station ground and attached
to the balun, run exactly parallel to the RG-213. The VSWR dropped flat.
I was relocated by the military to Missouri, and erected the same
antenna. There I found that the #12 WASN'T necessary! Talk about WEIRD!.
Bob - N0DGN
CHRIS PAPAIOANNOU wrote:
<>Bob,
i'm surprised even now while reading these lines of yours..except my
test i
mentioned before in my other msge didn't go further on..and of course
using
these kind of things like loads depends of the conditions..even if the
output transmitting power is high the dummy radiates a minimal portion of
this power which needs good conditions in order to be heard the max far
away.
73,
Chris,SV1DAF.
----- Original Message -----
From: "Rbethman" <[EMAIL PROTECTED]>
To: "Discussion of AM Radio" <[email protected]>
Sent: Sunday, October 31, 2004 9:53 PM
Subject: Re: [AMRadio] 813 tx
Chris,
I have held QSOs from Columbus, GA to Atlanta on 75 mtrs during the
daytime with an improperly grounded dummy load.
You may be REALLY surprised how far you CAN really transmit with
such things. It ALL boils down to the CURRENT conditions.
Bob - N0DGN
--
< Bob Bethman - N0DGN
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