Re: Cheap Vertical

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From: Tom Pennebaker (n4rs@netpath-rc.net)
Date: Wed Dec 05 2001 - 18:40:41 CST


Howard, the irrigation pipe comes in 2 sizes. 3 inches and 5 inches, someone
correct me if I'm wrong, that's close I'm sure. They come in 20 foot length.
My vertical is an old Army surplus unit and is 82 feet tall with 90 5/8
radials. The base section is about 3 inches in diameter. It's the hottest
antenna I've ever used for DX. I use a loop when not dxing because the loop
is quieter. If I really want to reach out there I go to the vertical. It is
guyed with nylon rope....(a no-no!) it's been up a good ten years with no
problems. The nylon still looks good but I know it's just a matter of time
when it will rot and I'll be rebuilding. Come to think of it I've never had
an antenna stay up for ten years with no problems.....hmmmm..Tom N4RS
----- Original Message -----
From: "TheRubins" <hrubin1970@home.com>
To: <qrp-l@lehigh.edu>
Cc: <n4rs@netpath-rc.net>
Sent: Wednesday, December 05, 2001 18:33 PM
Subject: RE: Cheap Vertical

> Tom,
>
> What diameter aluminum pipe are you suggesting here? I guess a full
> vertical on 40 would be about 37.5 feet, but the diameter of the pipe
might
> have a lot do with the resonant length. Also, the ground plane might be
> factor in the total efficiency of the system. How do you support your
> vertical antenna? Do use a capacity hat; if so, what size and
construction?
>
> We are in a suburban location here in SE PA, so no access to irrigation
> pipe. I think a few lengths of aluminum mast, welded together at the
seams
> would do as nicely.
>
> Regards,
> Howard Rubin, N3FEL
>
> -----Original Message-----
> From: owner-qrp-l@Lehigh.EDU [mailto:owner-qrp-l@Lehigh.EDU]On Behalf Of
> Tom Pennebaker
> Sent: Wednesday, December 05, 2001 5:10 PM
> To: Low Power Amateur Radio Discussion
> Subject: Cheap Vertical
>
>
> I have a full 5/8 vertical on 40 meters. It's about the same size in
> diameter as aluminum irrigation pipe. I understand this stuff can be had
> very reasonable. It develops pin holes from sand and eventually becomes
> useless as irrigation pipe. I'm sure there are farmers/ranchers that have
> this laying around and would be glad to get rid of it.........Tom N4RS
>


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