AM radio, FM radio, CB radio, short wave radio, VHF, UHF -- what's it all mean? These are all different chunks of the radio spectrum. Find out all about the thousands of different uses for radio waves.
A good communication network could help mine workers notify one another of unsafe conditions, but radio waves don't like to travel through rock. So what do you do? See more »
Do certain radio wave frequencies pose health risks? If so, is it safe to live within a quarter mile of a cellular phone tower or a radio antenna? See more »
A college student in Wisconsin hears a dj in Jamaica play the latest calypso tune. An advocacy group unites members across the country via a private broadcast. It's made possible by Internet radio, the latest innovation in radio broadcasting since the business began in the early 1920s. See more »
If you have a car radio that shows FM station call signs on the display panel, then you have the Radio Data System feature. Find out how they work! See more »
The air around you is bursting with radio waves -- and you can tap into them with minimal effort. With a simple radio scanner, all sorts of transmissions are within your earshot. Find out how radio scanners let you listen in on everything from police to astronaut transmissions. See more »