Subject: Re: [Antennas] Telescoping Aluminum Tubing

Wed, 9 Jan 2002 10:50:40 -0800

Check the metal recyclers, especially in agricultural areas ... Red Bluff CA
had thousands of feet of used irrigation pipe back 15 years ago ... that is
where most of the pipes ended up, and for sale cheap!
73 --- Mark ... AA6DX
----- Original Message -----
From: "Jim Hill" <[email protected]>
To: <[email protected]>
Sent: Tuesday, January 08, 2002 6:28 PM
Subject: RE: Subject: Re: [Antennas] Telescoping Aluminum Tubing
> Rick: Interesting web site! I bought tubing from the source Van Lincoln
> mentioned, and should receive it in a week or less. More is available;
> contact [email protected] for details.
>> Rick: is the aluminum irrigation tubing still available? I live in the Los
> Angeles area, but when I was in a farming region, I checked and it seems
> PVC is used now. I went to a large business that sold irrigation supplies,
> and asked if aluminum tubing could be ordered. It could be (20 or 30' max
> length, I forget which), but they acted like it was a very unusual
request.
> 73's Jim
>>>>> At 10:16 PM 1/7/2002 -0800, you wrote:
> >I use this technique for my 90 foot irrigation
> >tubing vertical. A 45 foot walk up pole is
> >used as the "falling derrick" as you described.
> >The 45 foot pole has side guys on it as you
> >suggest.
> >
> >Photos of this system going up are on my web
> >site (www.n6rk.com).
> >
> >Rick N6RK
> >
> > > -----Original Message-----
> > > From: [email protected]
> > > [mailto:[email protected]]On Behalf Of Dave and Sharon
> > > Maples
> > > Sent: Monday, January 07, 2002 8:48 PM
> > > To: [email protected]
> > > Subject: Re: Subject: Re: [Antennas] Telescoping Aluminum Tubing
> > >
> > >
> > > One technique I use to erect masts for Field Day (and it should work
well
> > > for other times) is to use a short pole pivoted at the same point as
the
> > > pivot for the mast, but with an angle of approximately 90 degrees to
the
> > > mast. I tie all the guys for one direction to that pole and tension
them
> > > appropriately, and then pull the top of the pole down. The mast comes
up
> > > but doesn't bend in the middle (assuming I tensioned the guys
correctly).
> > >
> > > My next modification to this is to set up a pair of outriggers on
> > > the short
> > > pole and run some guys to each end of the outriggers. This will keep
the
> > > mast from swaying as it comes up.
> > >
> > > Maybe this is useful.
> > >
> > > Dave WB4FUR
> > >
> > > ----- Original Message -----
> > > From: Richard Karlquist <[email protected]>
> > > To: <[email protected]>
> > > Sent: Friday, January 04, 2002 2:54 PM
> > > Subject: RE: Subject: Re: [Antennas] Telescoping Aluminum Tubing
> > >
> > >
> > > > I used to have a 50 foot 80 meter vertical made from
> > > > 4 inch .050 wall aluminum irrigation tubing. I was
> > > > able to walk that up by myself. A 60 foot version
> > > > required a helper on the ground pulling a rope while
> > > > I walked it up. It was mounted in a pivot on the ground.
> > > > I am building a new 60 foot vertical with 3 inch
> > > > tubing to 30 feet and 2 inch above that. I think I
> > > > can walk this up (if no wind).
> > >