I see what you mean about the top hat
http://www.mediasuk.org/archive/ndb-capo-san-vito-ta-.jpg

David wrote:

On 12 Nov 2005 01:36:01 -0800, miso@sushi.com wrote:

<http://www.lazygranch.com/images/a51pan/september2005/tower.jpg>

I'm working on a new area 51 panorama and noticed this tower. It the
striped object in the foreground. I wonder if this is the
non-directional beacon PYD? It could be weather instrumentation, but
the tower does have a shack nearby.

Does it have a ''top hat'' (an array of symmetrical horizontal
elements at the very top)?