[TowerTalk] Ground mounting vs roof mounting verticals

[Gary Schafer]

A vertical above your beam will not work. An elevated vertical must have
resonant radials.

73
Gary  K4FMX

> -----Original Message-----
> From: towertalk-bounces at contesting.com [mailto:towertalk-
> bounces at contesting.com] On Behalf Of AD5VJ Bob
> Sent: Wednesday, October 21, 2009 9:49 PM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] Ground mounting vs roof mounting verticals
> 
> Interesting,
> 
> I was just thinking of taking my Butternut vertical off the ground and
> mounting it to the top of my mast above my Hornet Tribander
> at around 35 feet.
> 
> So far it sounds like it might just be worth it.
> 
> My question would be how would I attach radials to the base of the
> vertical like that when my rotor is turning the mast?
> 
> Would the tower be ground enough by itself to make the other half of the
> vertical or could it work off of the tribander for its
> ground and not use wire radials??
> 
> Bob AD5VJ
> 
> > -----Original Message-----
> > From: towertalk-bounces at contesting.com
> > [mailto:towertalk-bounces at contesting.com] On Behalf Of Steve Katz
> > Sent: Wednesday, October 21, 2009 8:48 PM
> > To: Jon; ve3zi at rac.ca; towertalk at contesting.com
> > Subject: Re: [TowerTalk] Ground mounting vs roof mounting verticals
> >
> > 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 at contesting.com on behalf of Jon
> > Sent: Mon 10/19/2009 6:47 PM
> > To: ve3zi at rac.ca; towertalk at 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 at contesting.com
> > [mailto:towertalk-bounces at contesting.com]
> > > On Behalf Of Roger Parsons
> > > Sent: Monday, October 19, 2009 5:46 PM
> > > To: towertalk at 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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