I have a whole spool of military communications steel wire that I've been thinking about using to string up a doublet. We used this stuff when I was in the 138th Signal Btn and let me tell you, it's the meanest wire for it's size and weight that you'll ever lay your hands on. Some of it's attributes are:
It's so stiff that the set coils are hard to straighten out - and it's really tough to wrap around a bolt. Must be spring-steel?
It doesn't like to 'take' solder. It doesn't tarnish or rust. (???)
The black insulation resists scuffing, abrasion or even stripping.
It's so tough that it's very hard to break - or even to cut with wire dykes.
If anything could withstand being stretched 136 feet between trees and coated with ice to last a dozen winters, this should be it. It's 16 guage and hard to see from 50 feet away.
It's surely not nearly as well suited as copper for conductive properties but we used it in the Army for comm wire between field telephones and it's been used as such through World War II. It's really mean to work with - but it's hard to hurt it. Even in the worst conditions it lasts almost forever!
Has anybody tried using this wire for an antenna? What'd you think after you got done? Was it worth the grief?