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OK, let's discuss dipoles vs length
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October 13th 14, 03:01 AM posted to rec.radio.amateur.antenna
Jerry Stuckle
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First recorded activity by RadioBanter: Oct 2012
Posts: 1,067
OK, let's discuss dipoles vs length
On 10/12/2014 4:29 PM,
wrote:
Ralph Mowery wrote:
"Ian Jackson" wrote in message
...
In message ,
writes
Like I said, there is no difference in free space between a V and an
inverted V.
There are slight differences when close to ground.
Assuming it's a halfwave dipole, I would have thought it was better to
concentrate on getting the centre (where the current is) as high as
possible, rather than the ends. [Obviously this depends on whether you
have a suitable sky-hook available for and at the centre.] However, I
believe that there is at least one commercial loaded dipole (essentially
for portable use, I think) that has a short mast, and the ends of the V
are up in the air.
In free space I would not think there would be much of any differance.
Near the ground where most of us are is what we have to live with. In my
back yard I have enough room to string wire dipoles for 80 meters and
shorter. I don't have a way to support the antennas in the middle. I can
go up about 60 feet or so at the ends.
60 feet is good for 30M, marginal for 40M, and crap for 80M and below
for a dipole.
I'll argue with that. I got WAS on 75 meters with an inverted vee with
an apex of 50'. I was in Iowa at the time - but had a pretty good
signal across the continental U.S. late at night.
There are many things to consider, and blanket statements like yours are
pretty much worth what people pay for them.
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