Video encyclopedia

11/06/1935 The first public demonstration of FM broadcasting


Edwin Armstrong


Final Broadcast of Experimental FM Station KE2XCC

Electrical engineer and inventor of the FM radio, Edwin Armstrong, built his own radio station, W2XMN at Alpine, New Jersey, to demonstrate FM’s possibilities. Shortly after it began transmitting in July 1939, interest in FM soared. Armstrong commissioned General Electric to build 25 FM receiving sets at his own expense.
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    • Essentials 

    • Personal 

    • Regenerative circuit 

    • Superheterodyne circuit 

    • Wide-band FM radio 

    • FM radar 

    • Death 

    • Legacy