>From: David L. Thompson, firstname.lastname@example.org
>Please don't! EMT bends easily and is not suitable for masts.
Not all EMT is that thin. For *SHORT* masts carrying *LIGHT* loads, it is
perfectly acceptable. The pieces I've seen have walls that are at least
>several pieces here that
>I carried away from both TV and amateur installations that are bent. Even
>schedule 40 water pipe (inexpensive at any plumbing or large hardware
>supply) is better for short pieces. For extensions where multiple antennas
>are stacked you must use reinforced galvanized pipe or heavy wall aluminum.
>Many in Atlanta had good luck with heavy walled aluminum from Tull Metals.
>It comes in 20' lengths but costs over $200.
I used a 10 foot piece of 1 1/2" thick-wall EMT to hold up an A3 for four
years. Bending it would take a special tool and a LOT of leverage. It is
heavily galvanized and shows no signs of corrosion even after being
exposed to the elements. Cost $4 at Home Depot.
$200 to get a 9 foot piece to hold up a R7000 seems like a lot to pay.
We're not talking about putting up stacks of large beam antennas.
The larger EMT conduit is certainly a better mast material than the
thin-wall stackable TV antenna masts they sell at places like Home Depot.
This stuff is make of rolled sheet metal. It rusts in no-time and is
expensive ($15 for 10 foot piece).
Does anyone have information regarding the load-carrying capability of
standard EMT conduit?
Bill Coleman, AA4LR Mail: email@example.com
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