Dielectrical antenna for 80mm ?.....but usualy its a horizontal
polarization.
Or should it be metalized pipes? What about skin effect on 80 Meter, power
handling and HV on some part ?
Might be a STEPIRR on 80 project ?
73's jos
----- Original Message -----
From: "Jim W7RY" <w7ry@centurytel.net>
Cc: <towertalk@contesting.com>
Sent: Saturday, March 22, 2003 1:01 AM
Subject: Re: [TowerTalk] mechanical construction of 80m vertical
> A plastic vertical ?
>
> Hmmmm... What were you going to use for a radiator ? Put a piece of wire
> inside of it?
>
> The "weld" of PVC conduit is stronger than the pipe itself. It makes the 2
> pieces of plastic pipe 1. The US has been using plastic PVC gray conduit
for
> years!.... Great stuff!
>
>
> Good luck!
> 73
> Jim W7RY
>
> ----- Original Message -----
> From: "Chris BONDE" <ve7hcb@rac.ca>
> To: "Jim Hill" <w6ivw@cox.net>
> Cc: <towertalk@contesting.com>
> Sent: Friday, March 21, 2003 3:43 PM
> Subject: RE: [TowerTalk] mechanical construction of 80m vertical
>
>
> > I have been unable to find a supplier of irrigation tubing within a
> > reasonable distance.
> >
> > The other metal tubing that I have been trying to find out more about,
> and,
> > in some cases have found that they are good but expensive, are;
> electrical
> > conduit used for the stack, ie that part above the roof line ($$$$$),
> > industrial grade top rails for chainlink fencing, looks good but
shipping
> > the problem for me 20ft lengthas about CA$30 a length, the last was
custom
> > automobile exhaust tubing, comes in various sizes, can be welded
together
> > or flared. Should be galvo on the inside as well.
> >
> > The other one that took my notice was the new plastic electric
> > conduit. Have to use the large diameter to obtain wall thickness and
> donot
> > use the coupling, use a length of the main pipe as a splice or spint
over
> > the joint. I was wondering about plastic welding, is that as strong as
> the
> > main pipe as it is in steel pipe welding?
> >
> > Chris opr VE7HCB
> >
> >
> > At 02:45 PM 2003-03-21 -0800, Jim Hill wrote:
> > >Finding tubing isn't easy. I've stopped at a number of businesses in
> > >farming areas with little luck. plastic tubing seems to be currently
> used.
> > >However, the following store in Bakersfield CA is a good choice:
> > >
> > >The Irrigation Store, 4001 State Road, Bakersfield, CA 93303 661-4421
or
> > >800-742-7246. Their web site is: http://www.rainforrent.com/ Their web
> > >site shows tubing with end connections, but I thought I saw just plain
> > >pipe when I visited them. The web site also shows stores at other
> locations.
> > >
> > >73's Jim
> > >_______________________________________________
> > >
> > >See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> > >Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
> > >any questions and ask for Sherman, W2FLA.
> > >
> > >_______________________________________________
> > >TowerTalk mailing list
> > >TowerTalk@contesting.com
> > >http://lists.contesting.com/mailman/listinfo/towertalk
> >
> >
> > _______________________________________________
> >
> > See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
any
> questions and ask for Sherman, W2FLA.
> >
> > _______________________________________________
> > TowerTalk mailing list
> > TowerTalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
> >
>
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
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