While you guys are out hunting towers, do you notice what % of sites use microwave radio for tansmission? (They would be small microwave dishes usually around 3-10 feet in diameter and pointing horizontally at another tower) I was on the East Coast last year (between New York and Boston) and don't recall seing any microwave dishes on any cell towers. I assume most operators used fixed-lines for their transport network then? Usually, microwave is cheaper, as it pays itself off in only a few years, compared to the recurring monthly costs of leased-lines. (However, if you are say ATT and own both the mobile AND fixed line networks, then maybe it's not much of an issue?) Are there certain operators in the USA that prefer to use them, and other not? And what are their reasons?