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DC Comics Supergirl Radio Digital Alarm Clock with projection time Works find me at www.dandeepop.com

Earth Alone (Earthrise Book 1

DC Comics Supergirl Radio Digital Alarm Clock with projection time Works find me at www.dandeepop.com

The movie star behind your cellphone: Lamarr with assistance from George Antheil devised a pre-digital way to synchronize a radio transmitter and a receiver so that they can simultaneously switch from frequency to frequency while communicating a message. (This technique, which Lamarr dubbed “frequency hopping,” is now subsumed within the broader term “spread spectrum.” The Navy buried the patent [for a while] ..... (If you use Bluetooth devices, you use frequency hopping.)

“Hedy’s Folly”: The movie star behind your cellphone

The movie star behind your cellphone: Lamarr with assistance from George Antheil devised a pre-digital way to synchronize a radio transmitter and a receiver so that they can simultaneously switch from frequency to frequency while communicating a message. (This technique, which Lamarr dubbed “frequency hopping,” is now subsumed within the broader term “spread spectrum.” The Navy buried the patent [for a while] ..... (If you use Bluetooth devices, you use frequency hopping.)

Timex Digital Alarm Clock Radio #T235  find me at www.dandeepop.com

Timex Digital Alarm Clock Radio #T235 find me at www.dandeepop.com

Vintage Times Square Mini Mantle Desk Clock Gold Tone 1" tall find me at www.dandeepop.com

Earth Alone (Earthrise Book 1

Vintage Times Square Mini Mantle Desk Clock Gold Tone 1" tall find me at www.dandeepop.com

Vintage Gabriel Alarm Clock Metal Robert Shaw Controls Co. Lux time div 6" find me at www.dandeepop.com

Earth Alone (Earthrise Book 1

Vintage Gabriel Alarm Clock Metal Robert Shaw Controls Co. Lux time div 6" find me at www.dandeepop.com

Vintage Westclox Keywound Travel Alarm Clock Touralarm #44515 tan Luminous New find me at www.dandeepop.com

Earth Alone (Earthrise Book 1

Vintage Westclox Keywound Travel Alarm Clock Touralarm #44515 tan Luminous New find me at www.dandeepop.com

Crystal Glass Quartz Clock Anastasia's Gift Shop find me at www.dandeepop.com

Earth Alone (Earthrise Book 1

Crystal Glass Quartz Clock Anastasia's Gift Shop find me at www.dandeepop.com

Vintage Morita Pocket Watch With Case find me at www.dandeepop.com

Earth Alone (Earthrise Book 1

Vintage Morita Pocket Watch With Case find me at www.dandeepop.com

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