Lots More InformationRelated HowStuffWorks Articles
- How iPods Work
- How iTunes Works
- How MP3 Files Work
- How MP3 Players Work
- How Podcasting Works
- What is Linux and why is it so popular?
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!
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.