Thinkquest: Radio
- A project by three 12 year old students talks about the history of the radio, its inventor, and how it works.
- http://library.thinkquest.org/J0113011/

History of Radio from 1895-1945
- Timeline charts the first transmission of electronic waves, the beginnings of radio and its growing popularity, to the role it played during the war years.
- http://165.29.91.7/classes/humanities/amstud/97-98/radio/RADIHOME.HTM

How Stuff Works: How Radio Works
- Explains radio operation basics, transmitters, receivers and antennas.
- http://www.howstuffworks.com/radio.htm