My experience is closer to W4ZWs. My 6BTV at 28' with 24 radials is comparable
to my inverted vees at 55 feet, and typically 6 dB down from my beams on 15 &
20 meters at 60'. Moving it to the ground with 105 radials isn't anywhere near
as good.
WB2WIK/6
________________________________
From: towertalk-bounces@contesting.com on behalf of Jon
Sent: Mon 10/19/2009 6:47 PM
To: ve3zi@rac.ca; towertalk@contesting.com
Subject: Re: [TowerTalk] Ground mounting vs roof mounting verticals
My mileage did indeed vary.
I had an old 14AVQ mounted as a ground-plane up about 35' and it was a
killer DX antenna, not as good as my TH-6DXX at 75' but very good as a
second antenna. I later mounted it on the ground and it lost a lot compared
to the TH-6DXX.
As a GP on 40M it was a great antenna for DX work. On the ground, it was
less than a dipole at 50'.
As you said YMMV
Jon Hamlet, W4ZW
Casey Key Island, Florida
"A little piece of paradise in the Gulf of Mexico"
---Original Message-----
> From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]
> On Behalf Of Roger Parsons
> Sent: Monday, October 19, 2009 5:46 PM
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] Ground mounting vs roof mounting verticals
>
> I have an old AV3 10-15-20m vertical. I used to have it on top of a 20'
pole with 4 radials
> for each band. Compared to my A4S it was so bad as to be useless -
although the match
> was good on every band.
>
> I moved it to ground level with a lot of radials. It is now about 6dB
worse than the beam
> which makes it a useful second antenna.
>
> YMMV
>
> 73 Roger
> VE3ZI
>
>
>
>
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06:40:00
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