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[TowerTalk] Are higher HF antenna's really better?

To: <towertalk@contesting.com>
Subject: [TowerTalk] Are higher HF antenna's really better?
From: n4kg@juno.com (n4kg@juno.com)
Date: Thu, 10 Jan 2002 16:24:46 -0600
Those observations seem reasonable to me.

If you had 2 high stacks on 10 and 15M with the bottom antenna
at 40 ft, I expect you would observe more incidents of the low 
antenna being better.  Location and distance are also a factor.
W4ZV reports less wave angle variation to Europe from NC than
he calculates for my location in Alabama.

Tom  N4KG

On Thu, 10 Jan 2002  "ted demopoulos" <kr1g@hotmail.com> writes:
> 
> I've got 4/4 on 20m at 100 and 50 feet. The stack is usually louder 
> to  Europe BUT:
> 
> often in the afternoon, maybe 1900z or so, the lower antenna is 
> signifantly  better, a couple of "S-Units." I rarely see significant
>  benefits to  the  lower antennas alone in the 10m (25/50/75') or 
> 15m (35/70/105)  stacks.
> 
> 73
> Ted, KR1G
> 
> 
> >From: Pete Smith <n4zr@contesting.com>
> >To: <TOWERTALK@contesting.com>
> >Subject: Re: [TowerTalk] Are higher HF antenna's really better?
To: <towertalk@contesting.com>
> >Date: Thu, 10 Jan 2002 10:29:05 -0500
> >
> >
> >At 03:12 PM 1/10/02 -0000, Sain'T Tom wrote:
> > >
> > >    I once used 2 of the same 3 element 15 meter yagis 
> simultaneously 
> >from
> > >my old QTH in South Carolina.  One was at 70 feet on the tower 
> top and 
> >was
> > >rotatable.  The other was fixed on Europe at 40 feet.  Both had 
> >electrically
> > >equivalent (same electrical length) feed lines of RG213.
> > >
> > >    Reports from Europe generally, but not always, gave the stack 
> a 
> >slightly
> > >stronger signal report.  The lower sometimes would be reported 
> just as
> > >strong as the upper, but NEVER was it reported that the lower was 
> 
> >stronger.
> >
> >I think band and sunspot cycle phase have a lot to do with this.
> >Certainly, as N4KG says, if you can have multiple antennas there 
> are lots
> >of reasons to do so, including but not limited to stacking.  But if 
> you can
> >only have one, and particularly if it is a tribander, somewhere 
> between 75
> >and 100 feet is very nice indeed, but I'm not sure it makes a lot 
> of
> >difference which end of that range you're at.
> >
> >My 2-high stack of C-3Es is at 97 and 69 feet, and I have only 
> heard
> >signals louder on the lower antenna than the upper one, on any 
> band, on one
> >or two occasions.  My hunch is that if I had a third antenna at 
> 32-33 feet,
> >there's a greater chance that I'd notice differences between single
> >antennas, but most of the time, the whole stack together would 
> still be
> >best.
> >
> >73, Pete N4ZR
> >
> >The revised World Contest
> >Station Database
> >is online at www.pvrc.org
> >
> >
> >
> >
> >
>
>________________________________________________________________________
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> >
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> 
> 
> 
> 
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>
________________________________________________________________________
> This list is sponsored by the new eHam.net Store.  When you buy 
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> http://www.eham.net.
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________________________________________________________________________
This list is sponsored by the new eHam.net Store.  When you buy products
like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
the eHam Store for the same price you pay direct, a portion of the sale
price goes to support this list.  Check it out at http://www.eham.net.

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