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
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|