My understanding is that the "type acceptance" of transmitters capable of tuning to now-licensed frequencies is revoked and those transmitters cannot be used under Part 74 or Part 15 (IOW, by us). We unlicensed users made as much noise as we could (with key technical assistance from Sennheiser, Lectrosonics, Shure and other manufacturers) but ultimately we were up against the big 3 cell phone providers, a handful of "rent-a-tower" operators, and the producer$ who create and $ell the content that will occupy this spectrum. I find it ironic that we all create large spectacular productions that seem to get reduced to a 5 inch screen... Part of the abruptness for our minority use of the spectrum is that both the reverse and forward auctions had to be concluded first; there were multiple iterations of the reverse auction. Once it was all done the FCC had to determine the order to reallocate TV stations in adjacent markets; the way the forward auction played out, the same bands were not sold in every market. Chess, anyone? At any rate it was that process that dictated when the auction winners could begin lighting up their new plunder and when we'd have to stop using their spectrum.