Hmmm. I thoughts Hertz was a rent-a-car company :-0
73, CUL
Bob Bruno - K2KI
k2ki@starc.org
----- Original Message -----
From: <wb8jkr@juno.com>
To: <n3ji@yahoo.com>
Cc: <amps@contesting.com>
Sent: Sunday, December 26, 2004 9:25 AM
Subject: Re: [Amps] OFF TOPIC: Loop antenna question
> Naw, a Hertz is a cycle.
>
> Mark WB8JKR
>
> On Sun, 26 Dec 2004 06:20:18 -0800 (PST) Joe Isabella <n3ji@yahoo.com>
> writes:
> > I thought a Hertz was a dipole...
> >
> >
> > "R.Measures" <r@somis.org> wrote:
> >
> > On Dec 26, 2004, at 12:40 AM, Alek Petkovic wrote:
> >
> > > Have you thought of a section of open wire line in the feedline at
> > the
> > > feed point which puts the equivalent amount of wire into the loop
> > to
> > > resonate it on 75m?
> > >
> > > eg: a 75m loop for 3.9MHz is around 258' and for 7.2 MHz it would
> > be
> > > 140'. That is a difference of 118'. If you were to use a 59'
> > section
> > > of open wire, it would put 118' of extra wire into the loop.
> > >
> > The wire in a balanced feedline does Not add to the wire in the
> > antenna
> > -- i. e., antennas and feedlines are not like series resistors. .
> >
> > The best antenna I have used for limited space on 80m - 160m is the
> >
> > (end-fed against gnd) Hertz. A 100' by 60' lot will accommodate a
> > fairly efficient Hertz antenna. The tradeoff is that a
> > remote-controlled L-network is required at ground level at the
> > driven
> > end of the wire.
> >
> > > If it is not possible to do it that way, you could perhaps put one
> > or
> > > more loading stubs, say at the support points, still using open
> > wire,
> > > to make the antenna up to the total required length.
> > >
> > > I have not tried this but it could be a cheap solution and well
> > worth
> > > some experimentation.
> > >
> > > Good luck,
> > > Alek. VK6APK
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