RF Cafe Software

RF Cascade Workbook 2005 - RF Cafe
RF Cascade Workbook

Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
RF & EE Symbols Word
RF Stencils for Visio

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
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 Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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 - March 23

March 23

Happy Birthday Wernher von Braun! Click here to return to the RF Cafe homepage.1775: American revolutionary Patrick Henry declared, "...give me liberty, or give me death!" In 1840: Englishman J.W. Draper took the first successful photograph of the Moon. 1857: The world’s first passenger safety elevator, by Elisha Otis, went into service in a store in New York City. 1873: Richard Proctor, who first proposed that lunar craters are caused by meteors rather than volcanic actions, was born. 1903: The Wright brothers obtained an airplane patent. 1909: British Lt. Shackleton found the magnetic South Pole. 1912: German rocket pioneer Wernher von Braun was born. 1983: President Ronal Reagan announced the Strategic Defensive Initiative (SDI, or "Star Wars"). 1989: Electrochemists Stanley Pons and Martin Fleischman announced that they had created nuclear ("cold") fusion in a test tube at room temperature. 2001: The Russian space station, Mir, burned up in Earth's atmosphere after far out-living its designed lifespan. 2007: Set theory mathematician Paul Cohen died.

| 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.