Reg Edwards wrote:
In some cases the fixing nuts and bolts have come loose.


So ... with regards to my original question, one respondant voted that
those slant-polarized antennas are for reception of 'storecasting'
music, one felt it was just an attempt to cover both vertical and
horizontally-polarized sources, and one who thinks it's just loose
nuts. (and a whole lot of topic-drift discussion about the type of
polarization used in broadcast stations).

With regard to Reg's nuts-n-bolts suggestion, I've seen these antennas
far too often and in far too exact a 45 degree state for them to be
simply loose hardware.

So - other suggestions? Any support for the 'storecasting' idea? One
place I saw one of these was on a MacDonalds, another was a bank, so
Muzak would make sense. Still, why would so many be off-polarized?
Clueless installers covering both bases when they don't know the
'real' polarization? Some special service that transmits at that odd
angle?

Bob, KI8AB