Search RFC: |                                     
Please support my efforts by ADVERTISING!
About | Sitemap | Homepage Archive
Serving a Pleasant Blend of Yesterday, Today, and Tomorrow™
Vintage Magazines
Electronics World
Popular Electronics
Radio & TV News
QST | Pop Science
Popular Mechanics
Radio-Craft
Radio-Electronics
Short Wave Craft
Electronics | OFA
Saturday Eve Post
Alliance Test | Isotec
Please Support My Advertisers!
RF Cafe Sponsors
Aegis Power | Centric RF | RFCT
Empwr RF | Reactel | SF Circuits

Formulas & Data

Electronics | RF
Mathematics
Mechanics | Physics


Calvin & Phineas

kmblatt83@aol.com

Resources

Articles, Forums, Radar
Magazines, Museum
Radio Service Data
Software, Videos


Artificial Intelligence

Entertainment

Crosswords, Humor Cogitations, Podcast
Quotes, Quizzes

Parts & Services

1000s of Listings

        Software:

Please Donate
RF Cascade Workbook | RF Symbols for Office
RF Symbols for Visio | RF Stencils for Visio
Espresso Engineering Workbook
Innovative Power Products (IPP) RF Combiners / Dividers - RF Cafe

Copper Mountain Technologies Vector Network Analyzers - 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

Innovative Power Products (IPP) 90 deg Hybrid Couplers - RF Cafe

Day in Engineering History Archive - May 21

Day in Engineering History May 21 Archive - RF CafeMay 21

Charles Lindbergh Lands in Paris - RF Cafe1792: Gustave-Gaspard Coriolis, who discovered the circulation effect that bears his name, was born. 1878: Aviation pioneer Glenn Curtiss was born. 1916: Daylight Saving Time was introduced in Britain as a war-time measure to save fuel. 1927: Charles Lindbergh completed his 33-1/2 hour solo, non-stop flight from New York to Paris. 1932: Amelia Earhart became the first woman to fly solo across the Atlantic Ocean, from Newfoundland to Ireland. 1956: The U.S. exploded the first airborne hydrogen bomb in the Pacific Ocean over Bikini Atoll. 1927: Dudley Allen Buck, inventor of the cryotron switch and ferroelectric RAM, died. 1959: Radar pioneer and head of the National Security Agency Scientific Advisory Board panel on Electronics Louis Nicot Ridenour, died. 1965: English aircraft designer Sir Geoffrey De Havilland died. 1980: "Star Wars V: The Empire Strikes Back," was released.

| 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.

Innovative Power Products (IPP) 90 deg Hybrid Couplers - RF Cafe