An inventory of “existing spectrum allocation, assignment and utilization” is already under way, Federal Communications Commission Chairman Julius Genachowski said in a letter to Senate Commerce Committee Chairman Jay Rockefeller (D-W.Va.). Broadcasting & Cable reports that a bill mandating the inventory by the FCC and National Telecommunications and Information Administration has passed the House and is awaiting action in the Senate. The FCC soon will vote on a proposal to free spectrum in the mobile satellite services band for terrestrial broadband. Then, probably sometime during the next few months, will begin reclaiming 120 MHz of broadcast spectrum for that broadband.