Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
TotalTemp Technologies (Thermal Platforms) - RF Cafe

Innovative Power Products Passive RF Products - RF Cafe

RF Cascade Workbook 2018 by RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Amplifier Solutions Corporation (ASC) - RF Cafe

Day in Engineering History Archive - March 23

Day in Engineering History March 23 Archive - RF CafeMarch 23

Happy Birthday Wernher von Braun! Click here to return to the RF Cafe homepage.1749: French mathematician Pierre-Simon Laplace born. 1775: American revolutionary Patrick Henry declared, "...give me liberty, or give me death!" 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 Ronald 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. Many 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. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.

Amplifier Solutions Corporation (ASC) - RF Cafe
Anritsu Test Equipment - RF Cafe

everythingRF RF & Microwave Parts Database (h1)

withwave microwave devices - RF Cafe