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Re: [TowerTalk] 80 meter vertical

To: n0tt1@juno.com
Subject: Re: [TowerTalk] 80 meter vertical
From: Ted K2QMF <k2qmf@juno.com>
Date: Sun, 20 Jan 2019 12:33:22 -0500
List-post: <mailto:towertalk@contesting.com>
Hello Charlie,

Do you mean if the vertical is leaning toward the north
there is a 3dB loss in the north direction????

Thanks for clearing that up for me!

73,
Ted  K2QMF


On Sun, 20 Jan 2019 10:05:25 -0600 <n0tt1@juno.com> writes:
> I've wondered about that myself RE the vertical on a slope.  I did
> a quick model of a 40m vertical that is leaning 45 deg over flat 
> ground.
> If the vertical is say, leaning toward North, the elevation plot 
> shows a
> little
> more than 3db "loss" in the vertical direction (cloud warmer).  The
> azimuth plot shows ~4db F/B ratio that favors the "South" 
> direction.
> 
> Charlie, N0TT
> 
> On Sat, 19 Jan 2019 21:58:31 -0500 <john@kk9a.com> writes:
> > That is a great question, I have wondered this many times when 
> > operating on
> > the sloping terrain in VP2V and KP2. To my knowledge there is no 
> > modeling
> > software that will show a vertical's pattern on a hill.
> > 
> > John KK9A
> > 
> > Tom Osborne w7why wrote:
> > Hi All
> > 
> > I have tried putting  up an 80 meter vertical 3 or 4 times.  No 
> > matter what
> > I do, it is never better than my twinlead fed 80 meter dipole up 
> > about 65
> > feet.. This is both on close in stuff and longer range 
> propagation.
> > 
> > I tried it with the radials on the ground, with the feed point 
> > elevated
> > about 6 - 8 feet with 4 raised radials, and about every 
> combination 
> > I can
> > think of.
> > 
> > I was wondering if living on the side of a 450 foot hill makes a
> > difference?  The hill slopes down to the bay below my house.
> > 
> > I have a 20 meter HB beam up about 25 feet.  f I walk to the east 
> 
> > about 25
> > feet, and look back, the 20 meter antenna looks like it is about 
> 60 
> > feet
> > up.  Goes higher as I walk farther east down the hill.
> > 
> > Do verticals work poorly on the side of a hill, or does it make 
> any
> > difference at all??  Thanks and 73
> > 
> > *Tom W7WHY*
> > 
> > _______________________________________________
> > 
> > 
> > 
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> > 
> 
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