On Mon, 01 Oct 2007 13:48:40 -0700, Jim Lux wrote:

that would be what's known as a "pier pin" base

Yup. Fairly common in commercial tower installations as I've seen
several. Seems to be unique in ham installations, though.

73, de Nate

--

"The optimist proclaims that we live in the best of all possible worlds,
the pessimist fears this is true."