I found that 3" thin wall irrigation pipe will slip over 3" PVC which in
turn will slip over 3" chain link fence end posts (mine measures 1/4" wall,
2 3/4" od). I plugged the inside of one end of an 18" length of 3" PVC and
put a coupling sleeve on the other end. I use the end posts for the
support, slip the PVC over the end post and then slide the irrigation pipe
over the PVC.
Take a ruler to your local Home Depot and do some measuring. You may be
able to install a piece of end post in the concrete and mount everything on
that.
I didn't use concrete - I drove a stake through a 12" square piece of sheet
metal and into the ground, leaving a couple of inches of the stake
protruding up. I use this pin as a swivel so I can raise and lower my guyed
80m 4sq elements. No problem with arcing through the PVC and I do run full
power.
de Paul, W8AEF
---------------------------------------
ZF2TA ZF2JI FO8DX FO0PLA 8Q7AA XZ0A
---------------------------------------
----- Original Message -----
From: "Colburn" <kd4e@arrl.net>
To: <towertalk@contesting.com>
Sent: Friday, January 02, 2004 9:52 PM
Subject: [TowerTalk] Strengthening Insulated Push-up Pole Base
> I am thinking of putting up one or two 60' push-up poles isolated
> from ground as part of an experimental 40/60/80/160M antenna system.
> The bottom section of the push-up pole is 3".
>
> If I set a 3" ID section of thick-wall PVC inside an 8" section
> and set them in concrete would y'all recommend concrete, sand,
> or ??? in between the sections of PVC?
>
> I am wondering how the PVC may react to different substances,
> what would provide the best strength, if I want flexiblity
> between the sections, and what might enhance the insulation
> value of the PVC.
>
> Thanks! & 73, doc kd4e
>
> --
> "Wars and rumors of wars, disasters, and social decay,
> yet undaunted for love and peace we pray." dmc
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> _______________________________________________
>
> 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
|