dcbw, don't forget though Verizon doesn't put one antenna per site. Those rates would be per *sector*. Almost no-one runs a monopole, I think by standard Verizon builds every site at least with 3-way sectorization, some company here in Iowa City (not Verizon) has one or two sites built with 8 sectors! Still they will probably have capacity trouble in some cities but it's not as bad as the numbers imply at first glance.
Yep. I think AT&T scrimped a bit, but I do think this is what's REALLY causing them problems -- having to shift 10mhz at a time from GSM to 3G will be impossible in a few markets, and difficult to juggle the 3G versus GSM in many many others.. if they have 20mhz, it's either 0 3G or 50% 3G; if they have 30 or 35mhz it's 0, 1/3rd, or 2/3rds. (They are STILL selling GSM-only phones so they will not be able to turn off GSM for a long long time.) Verizon's using fairly wide LTE channels since they got plenty of spectrum, but LTE does have a ~1.25mhz option (I think it actually is 1.4mhz) so if a carrier doesn't have 700mhz spectrum to use, they can squeeze in some LTE in the 800mhz and 1900mhz spectrum they already have even if it's fairly full.Not only that, HSPA+ requires a lot of spectrum. It needs a minimum of 10mhz paired (5mhz downlink & 5mhz uplink).