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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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 - April 6

April 6

April 6, 1965, Intelsat 1 "Early Bird" Launched - RF Cafe    Alles Gute zum Geburtstag, Herr Fokker! - Please click here to visit RF Cafe.

 

648 B.C.: Earliest total solar eclipse recorded by Greeks was observed. 1889: The Kodak Camera was offered for sale by George Eastman. 1890: German aircraft designer Anthony Fokker, creator of the Red Baron's famous DR-1 triplane, was born. 1892: Donald Wills Douglas, of aircraft design fame, was born. 1912: An electric starter first appeared in cars to replace the hand crank. 1914: Hiram Maxim, with $50 in backing by the Radio Club of Hartford, proposed the formation of the American Radio Relay League (ARRL). 1917: America formally entered World War I. 1927: William P. MacCracken, Jr. earned license number ‘1’ when the Department of Commerce issued the first pilots license.1938: DuPont researchers accidentally discovered polytetrafluoroethylene (PTFE) and was marketed as Teflon. 1954: The TV Dinner was first sold by Swanson & Sons. 1965: The first U.S. commercial geosynchronous communications satellite, "Early Bird" Intelsat 1, was launched. 1973: Pioneer 11 was launched to Jupiter and Saturn. 1992: Prolific science fact and fiction writer Isaac Asimov died. 1998: The Dow Jones Industrial Average (DJIA) closed above 9,000 for the first time.

| 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.