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Radio waves discoverd.
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Period: to
Timeline of the radio
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The radio invented.
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Marconi radio factory chelmsford opens.
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First transalantic radio transmission.
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The ARRL (Amateur Radio Relay League) was formed.
The ARRL is an orginzaztion of amateur radio operators in the United States. -
AM radio invented.
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FM radio was invented.
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Transistor radios invented.