Ralph Mowery wrote:

Barrett wrote:
Ralph, was the 21 foot tube you used steel or alloy?


I don't know what kind of pipe it is. I went to a place that sells metal
and told them I wanted some galvinised pipe. One piece 1 1/2 inch trade
size about 20 feet long and also to support the tower I got 3 pieces that
are about 3 or 4 inches in diameter and 9 feet long. Those were for the
guy
wires. I put around 4 feet of the pipes in the ground and filled them
with
cement. Hopefully that will keep them from bending over. The tower is
guyed around 30 feet and again near the top. It is also in a yard of
cement. More or less to Rhon's specs for a 25G tower. I bought the
tower
sections used. Think it was the least expensive part of the whole thing..

Here are a few pix of the tower.

http://home.earthlink.net/~ku4pt/images/


Pipe is supplied in various "schedule" sizes, starting at 10. Common iron
plumbing pipe is malleable (low carbon steel) and usually Schedule 40. So,
what are the actual dimensions? Try he
http://www.engineersedge.com/pipe_schedules.htm. So, commonly available
1-1/2" (1.90" OD) Schedule 40 would have a 0.145" wall thickness.
Bryan WA7PRC