Hi Dave,
Have you actually tried one? Mine seems to work. I was ready to put
out radials
also, but doesn't seem to be necessary.
- Jerry KF6VB
On 2022-01-16 10:07, David Gilbert wrote:
That post illustrates the mistake in thinking that a lightning ground
(Ufer) is the same as an RF shield (radials) to avoid ground return
losses. They are NOT the same and they perform completely different
functions.
73,
Dave AB7E
On 1/16/2022 9:35 AM, jerry wrote:
All,
I had a similar situation. The 4BTV was mounted on a pole pounded
into
my wildland hill behind the house. It had about 50 radials, and every
year
when we whacked the weeds, one or two of the radials would get tangled
in the
whacker.
In the fullness of time, we put in a swimming pool a bit down the
hill, and
the antenna site became a solar heating field for the pool. The
concrete guy
poured a 70' by 10' pad for the solar heating array.
After he built the forms, I came out with a roll of 8AWG copper
wire. I
laid 80 feet of it along the rebar. I pounded my pipe into the earth
and had
the wire come out next to it.
He poured the concrete, and I had an "Ufer" ground. I installed a
brand new
6BTV, and DX Engineering's tilt base on the pole. No radials. Works
great!
I carefully tuned it, and then installed an MFJ998RT KW autotuner at
the base of the antenna.
- Jerry KF6VB
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On 2022-01-16 10:07, David Gilbert wrote:
That post illustrates the mistake in thinking that a lightning ground
(Ufer) is the same as an RF shield (radials) to avoid ground return
losses. They are NOT the same and they perform completely different
functions.
73,
Dave AB7E
On 1/16/2022 9:35 AM, jerry wrote:
All,
I had a similar situation. The 4BTV was mounted on a pole pounded
into
my wildland hill behind the house. It had about 50 radials, and every
year
when we whacked the weeds, one or two of the radials would get tangled
in the
whacker.
In the fullness of time, we put in a swimming pool a bit down the
hill, and
the antenna site became a solar heating field for the pool. The
concrete guy
poured a 70' by 10' pad for the solar heating array.
After he built the forms, I came out with a roll of 8AWG copper
wire. I
laid 80 feet of it along the rebar. I pounded my pipe into the earth
and had
the wire come out next to it.
He poured the concrete, and I had an "Ufer" ground. I installed a
brand new
6BTV, and DX Engineering's tilt base on the pole. No radials. Works
great!
I carefully tuned it, and then installed an MFJ998RT KW autotuner at
the base of the antenna.
- Jerry KF6VB
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to je...@tr2.com
______________________________________________________________
Elecraft mailing list
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
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Please help support this email list: http://www.qsl.net/donate.html
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