On Saturday 20 February 2010 03:32 pm, Tom Spencer wrote: > Cowboy - > > I believe that's called a coaxial vertical antenna... > > not unknown at HF / VHF / UHF... As I recall, that's where the shield is folded back against itself, and the center is allowed to extend. The "coaxial sleeve." Essentially, a vertical coaxial dipole. They work fairly well. -- Cowboy