EarthLink, SK Telecom Team for New MVNO

"Sprint actually has plenty of spectrum to spare, and even more after bringing on Nextel. That's why they've been bringing on MVNOs like crazy."

mostly true but let me add this. Sprint's data network, same deal for verizon, is uplink limited and both will be even after DO.

The uplink will pretty much slow to a grind after 3 to 4 "broadband" users are on it per cell unless the operator puts a cap on each user, which they are probably doing. Cingular's WCDMA HSDPA will have the same problem.

So they'll have to do something to deal with that uplink, for data not voice. Deploying more channels is the obvious solution but that is inefficient. Sprint had relatively few radio channels deployed per market.