Search RFCafe.com                           
      More Than 17,000 Unique Pages
Please support me by ADVERTISING!
Serving a Pleasant Blend of Yesterday, Today, and Tomorrow™ Please Support My Advertisers!
   Formulas & Data
Electronics | RF
Mathematics
Mechanics | Physics
     AI-Generated
     Technical Data
Pioneers | Society
Companies | Parts
Principles | Assns


 About | Sitemap
Homepage Archive
        Resources
Articles, Forums Calculators, Radar
Magazines, Museum
Radio Service Data
Software, Videos
     Entertainment
Crosswords, Humor Cogitations, Podcast
Quotes, Quizzes
   Parts & Services
1000s of Listings
 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

Software: RF Cascade Workbook
RF Stencils Visio | RF Symbols Visio
RF Symbols Office | Cafe Press
Espresso Engineering Workbook

Aegis Power  |  Alliance Test
Centric RF  |  Empower RF
ISOTEC  |  Reactel  |  RFCT
San Fran Circuits

Exodus Advanced Communications Best in Class RF Amplifier SSPAs

ConductRF Phased Matched RF Cables - RF Cafe

Axiom Test Equipment - 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

Day in Engineering History Archive - May 26

Day in Engineering History May 26 Archive - RF CafeMay 26

Happy Birthday Sally Ride! - Please click here to visit RF Cafe.1854: Frederick Langenheim took the first photograph of a solar eclipse. 1872: A fire extinguisher was patented by Thomas J. Martin. 1874: Henri Farman, the airplane designer who invented ailerons, was born. 1888: Nobel Prize winner Ascanio Sobrero, who discovered nitroglycerine, died. 1908: The first major Middle East oil strike was made in Persia (now Iraq). 1927: Ford Motor Company produced its last "Tin Lizzie." 1939: Charles Mayo, co-founder of the Mayo Clinic, died. 1946: A patent was filed in the U.S. for an H-bomb. 1951: Sally Ride, the first American woman to orbit the earth when she flew aboard Space Shuttle Challenger, was born. 1959: The word "Frisbee" became a registered trademark of Wham-O. 1961: A U.S. Air Force bomber flew across the Atlantic in a record time of just over three hours. 1969: The "Apollo 10" astronauts returned to Earth after a successful 8-day dress rehearsal for the first manned moon landing. 1981: Satya Pal Asija received the first U.S. patent for computer software. 1994: President Clinton announced his administration would no longer link China's trade status with its human rights record. 1999: Waldo Semon, the inventor of PVC plastic, died. 2003: English astronomer Gerald Hawkins, who first identified Stonehenge as an astronomical observatory, died. 2007: Homer Stewart, an early pioneer of rocket research who helped develop the first successful U.S. satellite, Explorer I, 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.

Innovative Power Products (IPP) 90 deg Hybrid Couplers
Copper Mountain Technologies (VNA) - RF Cafe



TotalTemp Technologies (Thermal Platforms) - RF Cafe