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 »

How does a CB radio antenna work? Why does it have to be tuned? How do you tune it properly? See more »

EPIRB is meant to help rescuers locate you in an emergency situation, and these radios have saved many lives since their creation in the 1970s. Find out who they've helped the most. See more »

FCC auctions are a big deal in the communications industry. Learn more about how FCC auctions work in this article. See more »

Ham radio lets people talk across the globe, wirelessly and inexpensively. It's a subculture in its own right. See what amateur radio is all about and how you can become an operator. See more »

A new radio format is set to add features to your radio listening experience: HD Radio. Learn how it works. 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 »