Many, if not all, FM broadcast stations in the US transmit both a vertically
and horizontally polarized signal. So, rotating the antenna 45 degrees is
not giving up anything. You also see other fixed direction VHF antennas on
businesses, that have nothing to do with broadcasting.

Tam/WB2TT
"Reg Edwards" wrote in message
...


A polarisation error of 45 degrees of a dipole results in only 3 dB
smaller
signal. This is not noticed in areas of good signal strength where most
people live. Polarisation doesn't seem to bother mobile phone users very
much either.

It is necessary only that interfering signals and echos, if there are any,
are minimised. And that depends more on the direction from which waves
are
received.
----
Reg.