RF Cafe Software

RF Cascade Workbook 2005 - RF Cafe
RF Cascade Workbook

Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
Smith Chartâ„¢ 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

Try Using SEARCH
to Find What You Need. 
There are 1,000s of Pages Indexed on RF Cafe !

Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes RF Cascade Workbook RF Stencils for Visio Shapes for Word Thank you for visiting RF Cafe!

Day in Engineering History Archive - March 12

March 12

Gustav Kirchhoff born. Click here to return to the RF Cafe homepage.1824 German physicist Gustav Kirchhoff, who formulated Kirchhoff's Laws of current and voltage in closed circuits, was born. 1831: Auto maker Clement Studebaker, the world's largest producer of horse-drawn vehicles, was born. 1894: Coca-Cola was sold in bottles for the first time. 1914: George Westinghouse, founder of Westinghouse Electric Company and inventor of railway braking systems, died. 1923: Astronaut Wally Schirra, the only man to fly in Mercury, Gemini and Apollo spaceships, was born. 1925: Japanese Nobel laureate Leo Esaki, who pioneered work on electrons tunneling in solids, was born. 1929: G.L. Pierce received a patent for the basketball. 1942: Nobel laureate Sir William Bragg, after whom Bragg's Law of diffraction is named, died. 1951: Dennis the Menace first appeared in the funny pages. 1970: U.S. Senate voted to lower the voting age from 21 to 18 years old. 1998: Astronomers debunked a warning that a mile-wide asteroid might collide with Earth on 10/26/2028, saying the calculations were off by 600,000 miles.

| 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.