Exactly . My Point. Mark, AA6DX
aa6dx@arrl.net
----- Original Message -----
From: "Bob Nielsen" <nielsen@oz.net>
To: "tower" <towertalk@contesting.com>
Sent: Monday, June 23, 2003 4:44 PM
Subject: Re: [TowerTalk] LP VS YAGI
> I'd be very surprised if it didn't beat the LP. In a log-periodic
> dipole array, the elements closest to one-half wavelength radiate most
> of the energy, which limits the gain to around 6-6.5 dBd maximum
> (depending on the alpha and tau values in the design), which is about
> what a 3 element yagi will do.
>
> Of course, outside the fairly narrow bandwidth of the monoband yagi, I
> suspect the LPDA would be the better performer by a substantial margin.
>
> 73,
> Bob, N7XY
>
>
> On Mon, Jun 23, 2003 at 03:11:24PM -0700, AA6DX wrote:
> > Well .. just FYI .. my Mosely 5 el 20M monobander (46' Boom) would kick
the
> > britches off of a brand new Sabre Log Periodic .. same power,
approximately
> > same antenna height .. located about 3 miles apart. The Sabre was at
Fort
> > Wainwright, Alaska, at the com center. The Mosely was at my home, in
North
> > Pole....I installed both aerials! Multiple tests .. the LP N E V E R
> > came out on top. 73, Mark AA6DX
> > ----- Original Message -----
> > From: "on4kj" <on4kj@skynet.be>
> > To: "Lee Buller" <k0wa@swbell.net>; "TowerTalk"
<towertalk@contesting.com>
> > Sent: Monday, June 23, 2003 2:36 PM
> > Subject: Re: [TowerTalk] Log periodic vs Steppir
> >
> >
> > > Antenna other then those for a fixed frequency ( such as used in VHF
and
> > > UHF ) are always a compromise.
> > > LP brings a lot more of metal on the towers , so think it over. There
is
> > not
> > > that much gain difference between LP and classic beams. Stepper
technics
> > > is a better aproach to the fixed freq antenna, and will be ideal ( I
> > > suppose ) the day they can adjust the distances between the elements
and
> > the
> > > element lenghts as well.
> > > My two Euro cent vision .
> > >
> > > Jos on4kj
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