[BC] Bay spacing

[Richard Fry]

>...this antenna would just be forming a minor lobe, which would be large 
>enough to improve the signal in the less tall buildings directly below the 
>site...

Probably a bigger consideration for good, close-in building penetration for 
a 2-element array with 0.625-wave vertical spacing is the null in its 
elevation pattern at a depression angle of about 53° (link below).

Using a single element would be better for your purposes, even though it 
needs more input power for the licensed ERP.

The patterns in the link are based on elements having about 10% relative 
field at +/-90° elevation, which is fairly typical for a c-pol FM element in 
real life.

The gains shown are for linear polarization -- c-pol gain is 1/2 that.

http://i62.photobucket.com/albums/h85/rfry-100/Pattern_Compare.jpg

RF