Is there anyway to move the coupler outside the house? Your antenna
starts at the coupler, which means you are probably getting RFI and
such from a couple of thing: your antenna is radiating next to all the
wires in the house and your ground my not be sufficient. Is the ground
rod driven into the dirt? And copper will work better than rebar.
Your long wire antenna sounds fine in length, but you still need a
counterpoise of some sort. Also, there my be high voltage at the end
of the antenna so if anyone can come in contact with it, you might
move it up out of the way. - Jeff/wb0m
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--- In YaesuTuner@..., "jay_hendershott" <jrcomp@...> wrote:
The antenna starts off at the corner of my
fence which is about 5' up from the ground. It then runs straight to
the top peak of my house which is about 30'+ high. This run is about
65'. The wire passes through a ceramic insulator then it comes down
to the left corner of my house were it is looped in a ceramic
insulator. It then passes through the wall to the tuner which is
inside the crawl space. The tail from the insulator to the tuner is
about 14 inches long. I have buried a 4' long piece of rebar into the
moist dirt of the crawl space. I attached a ground rod lug and a
piece of 12 guage wire from the tuner to the lug. One question I have
, does distance from ground rod to tuner matter? After some testing
last night I confirmed again that I cannot tune 80 or 30 meters. I
have also picked up rfi in one tv and the surround sound of another.
This was not a problem with my OCF. Hope this helps, I will be
experimenting more today. Thanks again.
73
JR
Hi JR,
You shouldn't have to do anything to the tuner. This tuner, or more
accurately, antenna coupler, is a great tuner when used correctly
(similar to Icom's AH-4. and SCG couplers).
We need more info on your antenna. You said you're have about 90'of
wire, but how is it set up, i.e. long wire, inverted L, etc.) and most
importantly, what are you using for a counterpoise?
And the coax is fine. The SWR from the tuner to your radio will
(almost) always be around 1.5 to 1 so loss should low, even with
longer lengths.
I will also e-mail a PDF on antenna's from the SCG company. It's very
good reading. I use an AH-4 with a vertical loop, about 200' of wire.
Keep asking questions and we'll help. 73, Jeff/wb0m
