I don't think it is a turnstile. The element configuration looks like an
attempt to broadband it by making it larger in diameter. The label says "HF
active antenna". Looks military. Probably a military portable unit.

wrote in message
ups.com...

Telamon wrote:
In article .com,
wrote:

At the risk of sounding dumb, can someone clue me into the origin
of
this antenna and where it's commonly used:



http://cgi.ebay.com/ws/eBayISAPI.dll...3880111 386&r
d=1&ssPageName=WDVW

Parisi Associates Inc
(781) 273-1211
105 Terrace Hall Ave
Burlington, MA 01803
(near Waltham)

Looks like some kind of turnstile antenna.

--
Telamon
Ventura, California

Interesting. I'm going to have to read up on these antennas now that my
curiosity is piqued. I'm wondering what the strengths and weaknesses
are of the turnstile design. Off the top of my head, I suspect that
this is probably not a great receive-only antenna and is probably
intended for hams. But I'll see what I can find about this design on
the web. You don't see many of these on ebay.

Steve