I know, until last year they only had 1 1x channel and 1 EVDO channel in the majority of cities I visited, Again, this is a just my own experience and not scientifically based. In my hometown, they used channel 350 for 1x and 425 (I think) for years. In some of the sites that have added a second 1x channel. They have definitely added a second EVDO channel (1125).
Now in some places they only have a 5x5 A-F channel and there's not much they can do. Other places they can. That was the gist of my question.