Google suggests in a new FCC filing it is exploring using wireless broadband to deliver gigabit speeds. Google says it's already using the 3.5 GHz band in Kansas City, and wants to test "experimental transmitters" at up to 24 US locations. "We are working to test the viability of a wireless network that relies on newly available spectrum," Google told Business Insider. "The project is in early stages today, but we hope this technology can one day help deliver more abundant Internet access to consumers."