Formulas & Data:
- Electronics
- Mathematics
- Physics
- RF & Microwaves

Parts Vendors:
- all hand-selected

- Amateur Radio
- Vintage Articles:
- Electronics World
- Popular Electronics
- QST
- Radio & TV News
- Radio Craft
- Short Wave Craft
- Wireless World

- Events Calendar
RF Cafe Homepage
Copyright 1999-2015   •−•  ••−•    −•−•  •−  ••−•  •   "RF Cafe" in Morse Code  >> Listen to It <<
- EW & Radar Handbook
- Quizzes       - Software
- App Notes
- Calculators
- Advertise on RF Cafe
- About RF Cafe™
- RF Cafe Shirts & Mugs
- RF Cafe Archives
RF Cafe Book Contest
- RF Cafe on Visit RF Cafe on Facebook Visit RF Cafe on Twitter Visit RF Cafe on LinkedIn
- Tech Humor
- Forums Archive
- Job Board
- Donate to RF Cafe
- Kirt's Cogitations
Custom Search
More than 10,000 searchable pages indexed.
Greetings: There is so much good stuff on RF Cafe that there is no way to list or link to all of it here. Please use the Search box or the Site Map to find what you want - there is a good chance I have it here. Thanks!

Day in Engineering History Archive - August 11

| Jan | Feb | Mar | Apr | May | Jun |
| Jul | Aug | Sep | Oct | Nov | Dec |

Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-) A couple years ago, I began commemorating the birthdays of notable people and events with special RF Cafe logos. Where available, I like to use images from postage stamps from the country where the person or event occurred.

August 11

Hedy Lamarr awarded spread spectrum patent - Please click here to visit RF Cafe.

The Dog Days of Summer end. 1896: The first electric light bulb socket featuring an on-and-off pull chain was patented by Harvey Hubbell. 1909: The liner Arapahoe was the first ship to use the radio distress call, SOS (save our ship, Morse Code ···---···). 1919: Industrialist Andrew Carnegie died. 1921: Tom Kilburn, who was the first to succeed in storing and then retrieving a bit of data via software, was born. 1934: A load of America's most dangerous prisoners became the first inmates on Alcatraz Island. 1942: Actress Hedy Markey (Lamarr) received a patent for a secret communication system. 1951: WCBS-TV in New York City televised the first baseball doubleheader (in color) between the Brooklyn Dodgers and the Boston Braves. 1962: The Soviet Union launched cosmonaut Andrian Nikolayev on a 94-hour flight. 1977: Sir Frederic Williams, co-inventor of the CRT (the "Williams tube"), died. 1984: President Ronald Reagan joked during a voice test for a radio address that he had "signed legislation that will outlaw Russia forever. We begin bombing in five minutes." 1992: The Mall of America opened in Minneapolis as the largest shopping mall in the United States. 1997: President Clinton made the first the use of the line-item veto approved by Congress. 1999: The last total solar eclipse of the millennium occurred.


Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger… single-handedly redefining what an engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5th MOB: My USAF radar shop

Airplanes and Rockets: My personal hobby website

Equine Kingdom: My daughter Sally's horse riding website