"Richard Fry" wrote in message
...
___________

Also - most FM broadcast transmit antennas are arrays of several elements
in
a vertical stack to concentrate radiation in the horizontal plane. As a
result the radiation directed around the tower base is much lower than the
station's licensed power.

RF


Right, but often times there are a large number of people living in high
rise buildings near the FM antenna. It's conceivable there are more people
living in a high power FM radiation area than a high power AM radiation
area.

Frank Dresser

"Frank Dresser" wrote
... often times there are a large number of people
living in high rise buildings near the FM antenna. It's
conceivable there are more people living in a high power
FM radiation area than a high power AM radiation.
________________

Could happen in the odd case, but not usually. FM broadcast transmit
antennas located on building tops normally have radiation center heights
that easily clear the tops of nearby buildings. If they didn't, the
station's signal would be affected by shadowing (blockage) beyond the nearby
buildings, and have widespread multipath problems from reflections off the
building sides. Competitive issues make this situation unlikely.

RF