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!
Crane Aerospace Electronics Microwave Solutions: Space Qualified Passive Products

Innovative Power Products Passive RF Products - RF Cafe

Copper Mountain Technologies (VNA) - 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

Axiom Test Equipment - RF Cafe

Day in Engineering History Archive - October 25

Accutron 214, the world's first electronic wristwatch, went on sale from Bulova - RF CafeOctober 25

Bulova Accutron 214 Introduced - RF Cafe1647: Italian physicist and mathematician Evangelista Torricelli, who invented the barometer, died. 1789: Samuel Schwabe, who first documented the roughly 10-year sunspot cycle, died. 1877: American astronomer Henry Russell, who showed the relationship between a star's brightness and its spectral type, and co-created the Hertzsprung-Russell diagram, was born. 1888: U.S. explorer Richard Byrd, the first to make a flight over the North Pole, was born. 1890: Floyd Bennett, who piloted the airplane that flew Admiral Byrd, was born. 1910: William Higinbotham, who invented the first video game, "Tennis for Two," was born. 1934: Frank Julian Sprague, prodigious electrical design engineer, died. 1960: The Accutron 214, the world's first electronic wristwatch, went on sale from Bulova. 1962: Belgium's first nuclear powered electrical generation plant went online.

| 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.

Axiom Test Equipment - RF Cafe
Innovative Power Products Passive RF Products - RF Cafe

Exodus Advanced Communications Best in Class RF Amplifier SSPAs

TotalTemp Technologies (Thermal Platforms) - RF Cafe