reply to ElusiveH
Re: Tens-of-Billions of What? If you find me one detailing used and unused spectrum, I'd be ecstatic. That's a good start though, thanks.
Well Verizon and AT&T don't use the 2100 MHz band they hold. So thats some.
Heres maps of The 700Mhz they hold and in what markets they have more spectrum. AT&T's is probably larger from the Qualcomm spectrum acquisition recently