So is the same 160 meters of wire (about 500 ft
Straightened out into a flat top dipole. The dipole
would significantly out perform the loop.
--- k8bbm <firstname.lastname@example.org> wrote:
> at 2-3 wavelengths, you stop being a cloud warmer -
> remember that at harmonics, the radiation begins to
> go in
> the plane of the loop. I've used a 160 mtr horiz
> loop on 80
> mtrs and had wonderful performance.
> Dave K8BBM
> ----- Original Message Follows -----
> From: "Rob Atkinson, K5UJ" <email@example.com>
> To: firstname.lastname@example.org
> Subject: [TenTec] open wire feed/loops
> Date: Fri, 03 Feb 2006 03:00:38 +0000
> > I tried to find the bare copper 450 ohm open wire
> > with the ceramic or white plastic spacers a
> couple of
> > years ago, and after contacting 3 or 4 vendors
> who all
> > had the plastic window line only, was finally told
> > someone that you can't get the bare copper feed
> > because in our world of lawsuits, it was
> considered too
> > dangerous for anyone to use.
> > The only source i know of (besides making it
> yourself) for
> > the genuine open wire feed (i.e. not window line)
> > W7FG as someone else mentioned. This what I
> use, and I
> > have had no problems with it, but I can't compare
> it to
> > window line because i have never used the 450 ohm
> > line. For all I know, it may be just as good
> more or
> > less (or better?).
> > I use pvc pipes stuck in the ground and topped
> with T
> > sections to hold my line up over the ground. It
> > my basement at a small casement window that's 1.5
> x 2.5
> > feet and divided into 3 panes. I bashed out the
> > pane and replaced it with plexiglass that I
> drilled two
> > holes in 3" apart. I put banana jacks in these
> > terminated the line outside with plugs. this
> makes a
> > quick disconnect for thunderstorms. on the
> inside I
> > soldered another foot or two of line to the jacks
> and put
> > my transmatch on a shelf in front of the window.
> > from there to the rig. i was lucky to have a
> > made window--it almost looks like it was put there
> for the
> > feedline. As bob said, it's worth it to bring
> the line
> > in some way, even if you have to hire someone to
> saw a
> > square out and put in a window.
> > I have a question about the cloud burner loops.
> If you
> > have a low loop that's only 20' off the ground
> but make
> > it 2 or 3 lambda on 80 m. it seems to me it will
> still be
> > a cloud burner on that band. Is this right or
> will the
> > length give you some lower angles?
> > thanks,
> > rob / k5uj
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> > Download today - it's FREE!
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
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