RF Cafe Software

RF Cascade Workbook 2005 - RF Cafe
RF Cascade Workbook

Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
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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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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 - June 4

June 4

1st Public Hot Air Balloon Flight - RF Cafe1783: The first hot-air balloon was flown for ten minutes by brothers Joseph and Jacques Montgolfier of Annonay, France. 1896: Henry Ford made a successful pre-dawn test run of his horseless carriage, called a quadricycle, through the streets of Detroit. 1901: Guglielmo Marconi received a reissued patent RE011913) for "Wireless Telegraphy." 1910: Sir Christopher Cockerell, inventor of the hovercraft, was born. 1929: George Eastman demonstrated his first Technicolor movie. 1931: Hans Knoll and Ernst Ruska demonstrated their work on the first electron microscope. 1937: The first shopping cart was introduced by Sylvan Goldman in Oklahoma City, OK. 1940: Synthetic rubber tire unveiled. 1963: 6-year-old Robert Patch received a U.S. patent for a "Toy Truck." 1982: "Star Trek II: The Wrath of Khan," was released. 1989: Chinese army troops stormed Tiananmen Square in Beijing to crush the pro-democracy movement; hundreds - possibly thousands - of people died. 1998: Americans aboard the shuttle Discovery arrived at the Russian space station Mir to pick up U.S. astronaut Andrew Thomas after four months in orbit.

| 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.