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

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Day in Engineering History Archive February 27

February 27

Happy Birthday David Sarnoff! - Please click here to visit RF Cafe.1891: American communications pioneer and RCA's first general manager, David Sarnoff, was born. 1900: Felix Hoffman was awarded a patent for acetyl salicylic acid (Aspirin). 1906: Aeronautical pioneer Samuel Langley died. 1910: American aeronautical engineer Kelly Johnson, who founded the Lockheed Skunk Works, was born. 1932: The neutron was discovered by Dr. James Chadwick. 1936: Ivan Petrovich Pavlov, of salivating dog fame, died. 1942: J.S. Hey discovered radio emissions from the Sun. 1962: Astronaut Wally Schirra, the only man to fly in America's first three space programs: Mercury, Gemini and Apollo, blasted off from Cape Canaveral aboard the "Sigma 7" on a nine-hour flight. 1999: Colin Prescot and Andy Elson set a new hot air balloon endurance record by staying aloft for 233 hours and 55 minutes.

| 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.