Go directly to Radio Transmission activity
(139K - requires Shockwave)

Even today it seems like magic. You turn on your radio and, somehow, sound sent from a distant radio station fills the room.

For almost 100 years, radio has allowed us to send sounds over the air. How, exactly, is this done? The activity in this section shows you how.

On to the fun stuff...

• Radio Transmission activity(139K - requires Shockwave)
  
• text version of Radio Transmission activity

More about radio...

• The Early Years of Radio
• How is a Radio Wave Emitted?
• FM vs AM: What's the Difference?

Related People and Discoveries entries

• Lee de Forest
• Guglielmo Marconi

• Marconi receives radio signal over Atlantic
• KDKA begins to broadcast