Dave,

I would think it should work. I have an old Wilson 40 foot tubular tower
that has a house bracket at about 10 feet. Been there for 24 years. I used
some minimum amount of concrete, like about 5 - 6 bags, mixed in a garbage
can. The Wilson is a crank up/tiltower; so, I needed enough concrete that
the thing did not take off while tilting, with the house bracket removed.

You want to be sure the bracket is fastened to some main horizontal beam,
not plywood, or 2x4s that are held in place with a couple of nails.

Tam/WB2TT
"W5GT" wrote in message
...
Can a Rohn 25G be safely self-supporting at ~ 40' with a house bracket at
15', or must it be guyed? The beam will be a 10 lb. Mosley 3el mini-beam
with only 2.5 sq ft of wind surface area.

Is a concrete base essential under these circumstances? I'm planning on
erecting one in the spring and want to plan properly, but don't have much
room for guy wires unless it's unsafe not to use them.

Thanks & 73s

Dave - W5GT