Pat,

Here we go! The Glen Martin tower is an aluminum construction, 70' in height. It has two levels of Kevlar guys and comes with earth augers for attaching the guys. The tower incoporates their Voyager system where the rotor and antennas can travel up and down one face of the tower on a set of tracks. The tower is triangular with an 18" face. No need to climb the tower. When you need to work on antennas, or going on vacation for a couple of weeks. just lower the tram to ground level and greatly reduce the wind load. OK, you need to droop the guys toward the tower if your antenna boom is more than a few feet long, but it's not hard to do.

It may not work as well as I anticipate, but should be a lot safer to work on. You can get more information here: http://www.glenmartin.com/catalog/page3.html