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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.

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Day in Engineering History Archive March 5

March 5

Maiden Flight of the Spitfire. Click here to return to the RF Cafe homepage.Day in Engineering History March 5 Archive - RF Cafe1512: Flemish cartographer Gerardus Mercator, developer of the map projection that bears his name, was born. 1616: The Copernican sun-centric model is declared "false and erroneous" by the Catholic Church in Rome. 1827: Alessandro Giuseppe Antonio Anastasio Volta (no kidding), who invented the pile battery and after whom the unit of Volts is named, died. 1827: French mathematician Pierre-Simon Laplace died. 1836: Samuel Colt manufactured the first pistol (.34-caliber). 1872: George Westinghouse patented the railroad air brake. 1893: Emmett Culligan, founder of the "Hey Culligan Man" company, was born. 1904: Pioneer watchmaker Edward Howard died. 1912: The Italians became the first to use dirigibles for military purposes. 1936: The beautiful, elliptical winged British Spitfire made its first flight from Eastleigh aerodrome. 1946: Winston Churchill delivered his famous "Iron Curtain" speech, credited as the beginning of the Cold War, at Westminster College in Fulton, MO. 1979: Voyager 1 (Veeger, for Star Trek fans) made its closest approach to Jupiter. 1998: NASA announced that the Clementine orbiting craft had found enough water on the moon to support a human colony and rocket fueling station.

| 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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