"Richard Clark" wrote in message
...


As for the Navy using tilted antennas (suggested by an unnamed
admiral, Authur's usual anonymous authorities).... Well, I have been
invited aboard fighting ships in the last year. I have inspected
their AEGIS radars systems. I have taken pictures of their antennas.
If any one is interested, I could post some at my web site that are
absolutely beyond many correspondent's experience. They are not
tilted (an absurdity) unless a hurricane force wave slapped them into
the hull (not obviously evident by any evidence however).

Absurdity or no, a "stealthing" technique for the Arleigh Burke class
of destroyers involves sharply limiting the radar cross-section by not
installing vertical structures, including most, if not all, the antennas.

See this picture, which is typical.

http://en.wikipedia.org/wiki/Image:U...iterranean.jpg

You can clearly see two pairs of tilted HF whips, one pair amidships and
another pair on the stern. This same stealthing technique is being
employed on the new LPD-17 class.

Some Navy antennas are mounted on tilting mechanisms which allow
them to pivot all the way horizontal, so as not to be a hazard to aircraft.
That's different.