[Towertalk] RF transparent support poles

[Carl - WC4H]

Four many not be enough but six or eight would do it.  You may also need to
use some kind of rope to guy them to keep them straight since the loop would
tend to tug on each pole.

I would not worry too much about the weight of one loop.  Fiberglass is
pretty strong.

73
Carl

----- Original Message -----
From: "Jerry Kincade" <w5kp@swbell.net>
To: "Carl - WC4H" <wc4h@itis.net>; "Rob Atkinson, K5UJ" <k5uj@hotmail.com>;
<towertalk@contesting.com>
Sent: Thursday, April 11, 2002 2:17 PM
Subject: Re: [Towertalk] RF transparent support poles


> I have one of these, and although it works great for hoisting one end of
> something light or the center of a portable dipole/inverted V, I'd think
> they might be a bit willowy for four of them to support a loop, especially
> if the loop was to run 1.5 KW, which might call for some fairly heavy
> copper.
> 73, Jerry W5KP
>
> ----- Original Message -----
> From: "Carl - WC4H" <wc4h@itis.net>
> To: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>; <towertalk@contesting.com>
> Sent: Thursday, April 11, 2002 7:48 AM
> Subject: Re: [Towertalk] RF transparent support poles
>
>
> > MFJ & others sell a 33 ft locking telescoping mast made of fiberglass.
> They
> > collapse to 3.8 ft and weigh 3.3 lbs.  It's the MFJ-1910.  I have one
here
> > in my closet which I will be using for a wire antenna.  I'm planning to
> put
> > it on a tree so that I can get a total height of about 50 ft out of it.
> >
> > They are easy to raise and lower.
> >
> > 73
> > Carl
> > wc4h
> >
> > ----- Original Message -----
> > From: "Rob Atkinson, K5UJ" <k5uj@hotmail.com>
> > To: <towertalk@contesting.com>
> > Sent: Wednesday, April 10, 2002 1:40 PM
> > Subject: [Towertalk] RF transparent support poles
> >
> >
> > > Hi everyone:
> > >
> > > I'm toying with the idea of experimenting with a 4 corner horizontal
> loop
> > (a
> > > project after the next project). I'm on a city lot, 50' x 100' but I
> think
> > I
> > > could get a 200 to 225 foot loop up at 20 to 30 feet (my lot is not
> level)
> > > maybe higher.  The feed will come down from the feed point along side
my
> > > house with ladder line to my basement shack window which I'd replace
> with
> > > plexiglass.  I'll drill two holes in the center of the window & run
the
> > feed
> > > through to a balanced transmatch which will sit right there at the
> window.
> > > Only one problem so far:  I need 30' high rigid non-metalic supports,
> > > preferably unobtrusive looking.  I was at home depot a few days ago
and
> > they
> > > had these 4" diamater pvc sewer pipe sections but I figure I'd land on
> the
> > > city eyesore list if I put up four 30 foot high white columns of
plastic
> > all
> > > around my house.  There are a lot of people around here who are
uptight
> > > about this kind of thing.  I am interested in avoiding metal because I
> > don't
> > > want to detune or distort the patterns of my verticals.  Also, to get
> the
> > > longest wire possible I'd like to put the poles close to my property
> lines
> > > and that means they would have to be unguyed since any guy anchors
would
> > > have to be outside my property.  Ideally something black or green that
I
> > > could stick in the ground several feet to which I could attach an
> > insulator
> > > or pulley at the top and hold up thin stranded cu wire (but heavy
enough
> > for
> > > 1.5 kw--I don't believe in antennas with the word junior in their
names)
> > and
> > > a little bending at the top.  Willing to paint.  Fiberglass?  Any
> > > suggestions? Tnx & 73,
> > >
> > > Rob Atkinson
> > > K5UJ
> > > k5uj@hotmail.com
> > >
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