Even if only 25% of your homes had LOS to the tower, I would imagine that 900mhz and 2.4 ghz are both going to be pretty well trashed. In my area, most towns are only a hundred homes, with maybe 10% of those having LOS to the tower, and 900 mhz interference is a constant battle. 2.4 ghz is even starting to get hard to use with everyone and their grandma having wi-fi in their homes.
