[Antennas] Verticals And Trees

2002年9月28日 11:16:19 -0600

I just need to put my two cents worth in on this thread!
In my many years of operating on the Ham Bands I have found that there are
actually two types of verticals - the older types such as the Butternut
HF-6, and the newer types such as the Cushcraft R-7,7000, etc.
The Butternut's were originally designed for ground mounting and came
equipped for that and even their instructions told one how to do such, and
they worked very well - remember these types of verticals were made to use
the ground as the counterpoise, and as an after thought Butternut came out
with a radial system, that didn't work to well when mounted up high.
Now the newer types are designed with built in radials (counterpoises) and
these are meant to be height mounted - the higher the better and work quite
well this way.
For what it's worth!
Ron, N6PWW
----- Original Message -----
From: "Jim Shaw" <[email protected]>
To: "Kelley Shaddrick" <[email protected]>; <[email protected]>
Sent: Saturday, September 28, 2002 10:15 AM
Subject: RE: [Antennas] Verticals And Trees
> IMHO, verticals, like nearly all other antenna I can think of, do better
the
> higher they are mounted (at least up to a wavelength or two above ground).
> Why ground mount when you have such wonderful access to elevated mounting
> options? I'd use the trees to raise the vertical if I could.
>> Four radials is about the most needed for verticals when mounted above the
> ground. Shoot, why not try just a single counterpoise? Bet it would be
> adequate.
>> 73 de Jim WA6PX
> [email protected]
>> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Kelley Shaddrick
> Sent: Saturday, September 28, 2002 8:43 AM
> To: [email protected]
> Subject: [Antennas] Verticals And Trees
>>> What's the current thinking concerning HF verticals and trees. Do trees
have
> any effect on ground mounted (with radials) verticals, such as the 4, 5,
or
> 6BTV series? If there is some effect, what minimum safe distance should a
> vertical be away from the trees? My particular lot has trees pretty much
> everywhere I could mount a vertical antenna. Most are 60 foot plus trees.
>> Thanks for any thoughts,
>> Kelley-W0RK
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