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The woman who made your WiFi work. (RF tech trivia)
Diogenes' Middle Finger ^ | August 1, 2012 | Diogenes

Posted on 08/02/2012 6:51:11 AM PDT by Texas Fossil

Hedy Lamarr was an Austrian-born American actress. Max Reinhardt called her the “most beautiful woman in Europe” due to her “strikingly dark exotic looks”.

Mathematically talented, Lamarr came up with an early technique for spread spectrum communications and frequency hopping, necessary for wireless communication from the pre-computer age to the present day.

The international beauty, along with co-inventor composer George Anthiel, developed a "Secret Communications System" to help combat the Nazis in World War II. By manipulating radio frequencies at irregular intervals between transmission and reception, the invention formed an unbreakable code to prevent classified messages from being intercepted by enemy personnel.

Lamarr and Anthiel received a secure secret patent in 1941, but the enormous significance of their invention was not realized until decades later. It was first implemented on naval ships during the Cuban Missile Crisis and subsequently emerged in numerous military applications. But most importantly, the "spread spectrum" technology that Lamarr helped to invent would galvanize the digital communications boom, forming the technical backbone that makes cellular phones, fax machines and other wireless operations possible.


TOPICS: Computers/Internet; Science
KEYWORDS: hedylamarr; internet; pioneer; spreadspectrum
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I have been a student of technology most of my life and did not know this bit of trivia.

There are few women in the tech fields, interesting to see such a beautiful woman made this contribution.

1 posted on 08/02/2012 6:51:20 AM PDT by Texas Fossil
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To: Texas Fossil

“That’s *Hedley*.”


2 posted on 08/02/2012 6:52:34 AM PDT by To Hell With Poverty (Ephesians 6:12 becomes more real to me with each news cycle.)
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To: Texas Fossil

Intersil Semiconductor has a conference room named after her.


3 posted on 08/02/2012 6:52:45 AM PDT by stuartcr ("When silence speaks, it speaks only to those that have already decided what they want to hear.")
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To: Texas Fossil

“She didn’t build that.” - Obama


4 posted on 08/02/2012 6:53:32 AM PDT by dfwgator (FUJR (not you, Jim))
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To: To Hell With Poverty

DAMN IT!


5 posted on 08/02/2012 6:53:41 AM PDT by massgopguy (I owe everything to George Bailey)
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To: Texas Fossil

In one of Hollywood’s first nude scenes (maybe THE first) she ran naked through the woods :)


6 posted on 08/02/2012 6:54:17 AM PDT by Spirochete (Sic transit gloria mundi)
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To: massgopguy

Yep, you had to get in the thread pretty early to get that one in.


7 posted on 08/02/2012 6:54:17 AM PDT by dfwgator (FUJR (not you, Jim))
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To: Texas Fossil

I read about this years ago and about her idea. A truly remarkable and exceptionally beautiful woman, to boot.


8 posted on 08/02/2012 6:55:30 AM PDT by Gaffer
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To: To Hell With Poverty

“What the hell are you worried about...this is 1874; you’ll be able to sue her.”


9 posted on 08/02/2012 6:56:02 AM PDT by dfwgator (FUJR (not you, Jim))
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To: Texas Fossil
Julia Child (the chef) was involved in crypto during the war. Lots of interesting stories out there that we never hear about.

/johnny

10 posted on 08/02/2012 6:58:46 AM PDT by JRandomFreeper (Gone Galt)
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To: Texas Fossil
They didn't have engineers like her at my school.


11 posted on 08/02/2012 6:59:22 AM PDT by PapaBear3625 (If I can't be persuasive, I at least hope to be fun.)
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To: Texas Fossil

This thread worthless without daguerreotypes!


12 posted on 08/02/2012 7:00:39 AM PDT by posterchild
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To: Texas Fossil

Technically, what she conceived of (frequency hopping) is different than the direct sequence spread spectrum used for Wi-Fi, but - close enough. Credit where due. Makes you wonder how many of today’s pop culture idols have enough between their ears to come up with a similar idea?

Let’s see...Lady Gaga? Some rapper? Whoever has been acting in all those movies that aren’t worth watching?


13 posted on 08/02/2012 7:03:12 AM PDT by bigbob
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To: Texas Fossil; All
truly a beauty...and smart to boot.
no camera /picture does justice to her.

14 posted on 08/02/2012 7:05:50 AM PDT by skinkinthegrass (WA DC E$tabli$hment; DNC/RNC/Unionists...Brazilian saying: "$@me Old $hit; different flie$". :^)
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To: Texas Fossil

More history about frequency hopping.

http://www.eetimes.com/design/microwave-rf-design/4235369/A-short-history-of-spread-spectrum

... Nikola Tesla, the prolific Serbian-American inventor and radio pioneer, filed a U.S. patent, granted on March 17, 1903 which doesn’t mention the phrase “frequency hopping” directly, but certainly alludes to it. Entitled “Method of Signaling,” the patent describes a system that would enable radio communication “without any danger of the signals or messages begin disturbed, intercepted, interfered with in any way”.

Tesla’s patent details a system whereby transmitter and receiver are synchronized and hop between two channels (although the patent notes any number of channels could be used) by altering the carrier frequency in a predetermined sequence to avoid interference. ...


15 posted on 08/02/2012 7:07:38 AM PDT by USMCPOP (Father of LCpl. Karl Linn, KIA 1/26/2005 Al Haqlaniyah, Iraq)
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To: To Hell With Poverty; stuartcr; dfwgator; massgopguy; Spirochete; Gaffer; JRandomFreeper; ...

Yes, she was beautiful.

Yes, I had heard about Julia Child’s OAS connection. But not about Heddy.

Over time I have found a good number of FReepers are HAMS. Some like me largely inactive because of computers. But I am still interested in RF technology. (hate cell phones though)


16 posted on 08/02/2012 7:09:57 AM PDT by Texas Fossil (Government, even in its best state is but a necessary evil; in its worst state an intolerable one)
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To: Texas Fossil

In my prior life in military comms, I ran one of the hottest ‘rigs’ available. A full 50KW CW transmitter with a 640 acre antenna farm. Comms were a wicked 12kHz bandwidth, covering a frequency range from 5MHz (nighttime) up to 24MHz (daytime). Range was thousands of miles. This was all in the 60s and 70s - eventually replaced by satellite.


17 posted on 08/02/2012 7:14:21 AM PDT by Gaffer
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To: skinkinthegrass; To Hell With Poverty; stuartcr; dfwgator; massgopguy; Spirochete; Gaffer; ...

FYI my mother is a Swede from MN. She took a job in DC because of telegraphy skills she had. She and my father met in the train station in DC as he was preparing to ship to Europe during WWII. They knew each other 2-3 weeks before his ship left. Wrote during war. He had my grandfather send her a train ticket on his way back from Europe. They were married in my grandparents home the night she arrived in TX. That was 66 years ago.


18 posted on 08/02/2012 7:17:29 AM PDT by Texas Fossil (Government, even in its best state is but a necessary evil; in its worst state an intolerable one)
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To: bigbob
Your point at the distinction is correct. though both systems are classified as spread spectrum.
19 posted on 08/02/2012 7:25:16 AM PDT by fremont_steve
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To: Texas Fossil
Over time I have found a good number of FReepers are HAMS. Some like me largely inactive because of computers. But I am still interested in RF technology. (hate cell phones though)

I am not a ham. However I have been doing research on software defined radio in general and the GNU software defined radio in particular. If you like radio and you like computers, just combine them!

20 posted on 08/02/2012 7:32:27 AM PDT by pepsi_junkie (Who is John Galt?)
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