Everyone has heard the horror stories—from rescue units frantically trying to communicate during the terrifying first hours after the Twin Towers were struck, to communications crises during the most recent war. The cause? Emergency radios that could not find a clear channel amidst the noise of all the other signals, and systems that are not compatible. The Office of Naval Research has moved the Navy—and all the services—a big step closer to needing only one radio to talk to the many already in service with the development of an all-digital radio receiver. The inherent accuracy and very high processing speed...