the thing about HF verticals, is I don't think it really makes a difference
in performance if its 20 or 25 feet hi off the ground. You would need to
put it at the top of a 60 foot tower for there to be any real difference
between ground mounting and mounting higher up.
They're designed to be ground mounted anyway, so the performance is going to
be as good on the ground as high up.
73
Colin, V A6BKX
----- Original Message -----
From: "Lou Kline" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, March 18, 2007 7:18 PM
Subject: Re: Cushcraft R8 Revisited
> Not as long as you have a very secure mounting structure and guy it. It
is
> pretty tall, and heavy, and there is a lot of antenna to catch the
> wind. We had looked at doing something similar here, but decided that
> placing it in the back yard would be easier. It also made the antenna
much
> less obtrusive. The neighbors have been super here, but I don't want to
> push the point.
>
> Anyway, it should work well up there as long as you give it a very strong
> mounting structure.
>
> 73, de Lou K2LKK
>
>
>
>
>
> At 05:53 PM 3/18/2007 -0400, you wrote:
> >Hello Lou,
> >After reading your comments I looked up reviews on Titan and all were
> >positive. Since you have a Titan and have more experience than me I have
a
> >question.
> >
> >Do you see a problem if I mount on a mast on side of house above roof
line?
> >
> >Thanks
> >John KC2QJB
> >
> >----- Original Message -----
> >From: "Lou Kline" <[log in to unmask]>
> >To: <[log in to unmask]>
> >Sent: Sunday, March 18, 2007 1:24 PM
> >Subject: Re: Cushcraft R8 Revisited
> >
> >
> > > Hi Steve.
> > >
> > > I think you'll be happy with the performance on the upper bands with
that
> > > antenna. It's achilles heel is that it is tricky to tune on 40
meters,
> > > but
> > > is a good antenna otherwise. It is, however, quite involved to
assemble,
> > > and it is a big and heavy antenna, so you'll want to give some serious
> > > thought to how you want to mount it. I used the tilt-over base that
GAP
> > > makes for the Titan, and mixed up four 80 pound bags of concrete to
mount
> > > the base in. The base, itself, is very ruggedly constructed.
> > >
> > > The other difficulty that I had was that I had a capacitor that plugs
into
> > > the top of the antenna fail, making it impossible to load on 80
> > > meters. When I called GAP Technical Support, I was told that it was a
> > > common failure that is usually caused by rain penetrating the weather
boot
> > > on the top of the antenna. When I pulled the antenna down, I found
out
> > > that sure enough the weather boot had broken down leaving the
capacitor
> > > exposed. A 35 mm film can was just the right size to fit over the end
of
> > > the antenna, and once secured and sealed up, I've had no further
trouble
> > > with it.
> > >
> > > 73, de Lou K2LKK
> > >
> > >
> > >
> > > At 11:18 AM 3/18/2007 -0400, you wrote:
> > >>Lou,
> > >>
> > >>I've been thinking about a Gap for a while now, but want to know how
well
> > >>it
> > >>works before I rush out and buy one. I'm particularly interested in
its
> > >>performance on 20 meters and above. At present, I'm using a Cobra
> > >>Ultralite
> > >>Senior, which is an all-band folded dipole.
> > >>
> > >>Steve
> > >>
> > >>----- Original Message -----
> > >>From: "Lou Kline" <[log in to unmask]>
> > >>To: <[log in to unmask]>
> > >>Sent: Saturday, March 17, 2007 17:43
> > >>Subject: Re: Cushcraft R8 Revisited
> > >>
> > >>
> > >> > Hi.
> > >> >
> > >> > That depends upon the vertical antenna. The ones that are supposed
to
> > >> > act
> > >> > as an electrical quarterwave do require a ground or radials, but a
few
> > >> > are
> > >> > designed to function electrically as a vertical dipole, and these
do
> > >> > not
> > >> > require a radial system. For example, I run the GAP Titan, which
uses
> > >> > this
> > >> > design and does not need radials.
> > >> >
> > >> > The Cushcraft R5, R7, and R8 antennas also fall into this category
and
> > >> > do
> > >> > not require radials.
> > >> >
> > >> > 73, de Lou K2LKK
> > >> >
> > >> > At 01:18 PM 3/17/2007 -0400, you wrote:
> > >> >>Hi John;
> > >> >>
> > >> >>I don't know much about vertical antennas however, the ground
radials
> > >> >>are
> > >> >>the other half of the antenna.
> > >> >>
> > >> >>Without ground radials, a vertical antenna is not real effective.
> > >> >>
> > >> >>73 De Anthony W2AJV
> > >> >>[log in to unmask]
> > >> >>ECHOLINK NODE NUMBER: 74389
> > >> >>
> > >> >>----- Original Message -----
> > >> >>From: "John Vernaleken" <[log in to unmask]>
> > >> >>To: <[log in to unmask]>
> > >> >>Sent: Saturday, March 17, 2007 1:04 PM
> > >> >>Subject: [BLIND-HAMS] Cushcraft R8 Revisited
> > >> >>
> > >> >>
> > >> >>Since I do not have room for something like a G5RV or Carolina
Windom I
> > >> >>a
> > >> >>m
> > >> >>thinking about a Cushcraft R8. I would prefer not to have ground
> > >> >>radials
> > >> >>,
> > >> >>that is why I am looking at the R8.
> > >> >>Any feedback would be helpfull.
> > >> >>
> > >> >>Thanks
> > >> >>John KC2QJB
> > >> >>
> > >> >>
> > >> >>
> > >> >>--
> > >> >>No virus found in this incoming message.
> > >> >>Checked by AVG Free Edition.
> > >> >>Version: 7.5.446 / Virus Database: 268.18.13/725 - Release Date:
> > >> >>3/17/2007
> > >> >>12:33 PM
> > >> >
> > >> > Louis Kim Kline
> > >> > A.R.S. K2LKK
> > >> > Home e-mail: [log in to unmask]
> > >> > Work e-mail: [log in to unmask]
> > >> > Work Telephone: (585) 697-5753
> > >> >
> > >> >
> > >> >
> > >>
> > >>
> > >>
> > >>--
> > >>No virus found in this incoming message.
> > >>Checked by AVG Free Edition.
> > >>Version: 7.5.446 / Virus Database: 268.18.13/726 - Release Date:
3/18/2007
> > >>3:34 PM
> > >
> > > Louis Kim Kline
> > > A.R.S. K2LKK
> > > Home e-mail: [log in to unmask]
> > > Work e-mail: [log in to unmask]
> > > Work Telephone: (585) 697-5753
> > >
> >
> >
> >
> >--
> >No virus found in this incoming message.
> >Checked by AVG Free Edition.
> >Version: 7.5.446 / Virus Database: 268.18.13/726 - Release Date:
3/18/2007
> >3:34 PM
>
> Louis Kim Kline
> A.R.S. K2LKK
> Home e-mail: [log in to unmask]
> Work e-mail: [log in to unmask]
> Work Telephone: (585) 697-5753
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.446 / Virus Database: 268.18.13/725 - Release Date: 3/17/2007
12:33 PM
>
>
|
