Amateur Radio Relay League (ARRL) Become a "ham" radio operator!
Morse Code and Phonetic Alphabets Another way to learn about radio.
The Physics of Sound How sound works!
Your Introduction to Morse Code Audio CD
ARRL Ham Radio License Manual All You Need to Know to become an Amateur Radio Operator
Samuel F.B. Morse: Artist With a Message (The Sowers) Biography of the inventor of Morse code.
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