szczys writes: Google is building a 100kW transmitter at Spaceport America. As is becoming the regular source of early info, this comes via an FCC filing in which Google has asked the agency to keep the project secret. The signal strength itself isn't [groundbreaking] until you learn this is a directional antenna. Some of the most powerful FM radio transmitters get to 100kW, but those are omnidirectional. This is a highly focused directional antenna and that makes it sound like a big piece of Google's hushed Broadband Drone program.