The bobtail curtain array as well as the halfsquare is using vertical
elements a 1/4 wave high.
Feeding a half wave vertical from top or bottom makes no difference at all,
it is high impedance at the ends.
73
Peter
-----Original Message-----
From: KZ4USA [mailto:videorov@verizon.net]
Sent: Samstag, 14. Juni 2008 20:52
To: Peter Voelpel
Subject: Re: [TowerTalk] Vert. 1/2 wave dipole vs Hori. 1/2 wave dipole?
Try feedig at top like a bobtail curtain vertical array.
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Bradenton, Florida
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KZ4USA
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----- Original Message -----
From: "Peter Voelpel" <df3kv@t-online.de>
To: <towertalk@contesting.com>
Sent: Saturday, June 14, 2008 3:37 AM
Subject: Re: [TowerTalk] Vert. 1/2 wave dipole vs Hori. 1/2 wave dipole?
I did that comparison on 40m with dx stations only and it was a big
difference.
I used a L-tuner with my 1/4 80m vertical above 3km of radials 20-30m long
and used an inverted-V dipol at 30m height, ends at 20m. Distance between
antennas 150m with negiable line losses.
The dipol always outperformed the vertical by at least 6dbs in any
direction, on some signals the difference was approaching 10db.
The feedpoint of the vertical was very close to ground. I guess that it was
attenuated by the near ground and should have been much higher with it´s
feed point to perform better.
73
Peter
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of fraz1
I am very familiar with the "models". Does anyone have hands-on A/B
experience with these two antennas that can share their actual findings?
I'm talking in the 40M-20M range.
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