Probably not that big: I am planning to erect a 60' tower, and the spec.
calls for only a 5' x 5' x 6' base (the same even for the 100' model).
The manufacturer gives maximum antenna sizes for wind speeds as high as
70mph for the 100' one and 120mph for the 60' one.

AB2OS


JerryMouse wrote:

There's bad news.

Like an iceberg, there's more there than you see.

Consider the torque on a fifty foot tower in a modest wind.

The hunk of concrete you see is probably at the intersection of a large
"T" - maybe 20x20 feet with the out-riggers a foot square with rebar. You
are NOT going to tip this sucker into a nearby hole.