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

Innovative Power Products (IPP) RF Combiners / Dividers

LadyBug RF Power Sensors

KR Electronics (RF Filters) - 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

RF Cascade Workbook 2018 - RF Cafe

Day in Engineering History Archive - September 26

Day in Engineering History September 26 Archive - RF CafeSeptember 26

Please click here to visit RF Cafe.1772: The "Act to Regulate the Practice of Physick & Surgery within the colony of New Jersey," the first doctor licensing commission in the U.S., was put into effect. 1789: George Washington appointed Samuel Osgood of Massachusetts as the first Postmaster General under the Constitution. 1818: Dr. James Blundell preformed the first transfusion using human blood, as opposed to animal blood. 1868: August Möbius, the mathematician who invented the famous single-sided strip that bears his name, died. 1871: A patent was issued to David Saylor for the composition of Portland cement. 1887: Sir Barnes Wallis, inventor of the WWII, 9 kilopound "dambuster" bombs, was born. 1902: Blue jean inventor Levi Strauss died. 1914: The Federal Trade Commission (FTC) was established. 1981: The Boeing 767-200 made its maiden flight in Everett, WA. 1982: Paul Kollsman, inventor of the first accurate barometric altimeter, died. 1984: U.K. and China agreed to Hong Kong handover. 1991: Four men and four women began a 2-year stay inside Biosphere Two, in Oracle, AZ. 1996: Astronaut Shannon Lucid returned to Earth in the shuttle Atlantis after 6 months aboard the Russian Mir space station. 2002: Nils Bohlin, inventor of the 3-point should and lap safety belt, 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.

RF Cascade Workbook 2018 - RF Cafe
Rigol DHO1000 Oscilloscope - RF Cafe

RF Electronics Shapes, Stencils for Office, Visio by RF Cafe

Anatech Electronics RF Microwave Filters - RF Cafe