[TowerTalk] Experience with MA550 tower

[Joe Subich, W4TV]

> It also doesn't appear to have any 
> support pins. I don't know where I got that idea. Maybe 
> someone told me about a tubular tower that had such a 
> mechanism and I got it mixed up with the 77B. Sorry.

Commercial/Military masts made by Wil-Burt are available with 
locking pins and guyed versions for large antennas/tall heights. 
They are often used for COW (cell on wheels) and tactical military 
microwave as quick deploy, temporary facilities. 

73, 

   ... Joe, W4TV