cell phone

Hedy Lamarr – a Hollywood Star Invents Secure Communication Technology

Hedy Lamarr – a Hollywood Star Invents Secure Communication Technology

On November 9, 1913, Hollywood movie star Hedy Lamarr was born, co-inventor of an early form of the spread spectrum communication and frequency hopping, necessary for wireless communication from the pre-computer age to the present day. Family Background Ok, I assume that you are not necessarily familiar with spread spectrum communications technology. But, maybe you are wondering even more about a movie star diva of Hollywood’s Golden Age, who should be responsible for the…
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What a Brick! – The World’s First Cell Phone

What a Brick! – The World’s First Cell Phone

On September 21, 1983, the Motorola DynaTAC, the world‘s first commercially available cell phone received its FCC certification. DynaTAC was an abbreviation of Dynamic Adaptive Total Area Coverage. But, with a price of $3,995 in 1983 ($9,322 in present-day terms) it was a rather expensive while also exclusive gadget. But, it was not the first mobile phone at all. Actually, in Germany, the Deutsche Reichsbahn (German Railways) already started experimenting with a…
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