1. Radio Broadcasting

2. Continues to grow, with or without technology

3. Transmissions Technologies Amplitude Modulation (AM)  Varies signal strength Frequency Modulation (FM)  Varies frequency of signal 1978: FM passed AM in number of listeners

4. Owners Clear Channel Communications  1200 stations Cumulus Media  266 stations

5. SDARS Satellite Digital Audio Radio Service  XM Satellite Radio  Sirius Satellite Radio Music comes commercial free for $10-$13 a month Costs a lot to set up subscribers

6. Blunders Broadcast radio station owners have made SDARS possible by what they play and how they program their stations

7. DAB Digital Audio Broadcasting

8. The Fight Ahead MP3 players Cellular phones Radio stations as DAB streaming MP3 audio to cell phones?

9. IBOC In-band, on channel system  Simultaneous broadcast of analog and digital signals  Uses no new spectrum