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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
Webmaster:
    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:

AirplanesAndRockets.com

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Day in Engineering History Archive - July 24

Day in Engineering History July 24 Archive - RF CafeJuly 24

Happy Birthday Amelia Earhart!  Please click here to visit RF Cafe.Today is Women Aviators Day. 1837: English inventors Charles Wheatstone and William Cooke demonstrated the five-needle telegraph. 1897: Amelia Earhart, the first woman to fly alone over the Atlantic Ocean, was born. 1938: NesCafé instant coffee was commercially introduced in Switzerland by the Nestlé company. 1950: The first successful rocket (a captured V2) launch from Cape Canaveral took place. 1954: The sound of a human voice - that of James Trexler - was, for the first time ever, transmitted beyond the ionosphere and returned to Earth after reflecting off the moon (moon bounce). 1969: The Apollo 11 astronauts splashed down safely in the Pacific Ocean. 1974: English Nobel Prize winner James Chadwick, discoverer of the neutron, died. 1991: Andrew Lyne of the University of Manchester announced finding a planet outside of solar system. 2005: Lance Armstrong won his 7th Tour de France.

| 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. Many 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. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.

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