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 Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes USAF radar shop Notable Quotes App Notes Calculators Education Engineering Magazines RF Cafe Software,T-Shirts,Coffee Mugs Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Stencils for Visio RF & EE Shapes for Word Advertising RF Cafe Homepage Sudoku puzzles Facebook Test notes Thank you for visiting RF Cafe!
MECA Electronics Attenuators

Day in Engineering History Archive - April 6

April 6

   

April 6, 1965, Intelsat 1 "Early Bird" Launched - RF CafeAlles Gute zum Geburtstag, Herr Fokker! - Please click here to visit RF Cafe.Day in Engineering History April 6 Archive - RF Cafe648 B.C.: Earliest total solar eclipse recorded by Greeks was observed. 1889: The Kodak Camera was offered for sale by George Eastman. 1890: German aircraft designer Anthony Fokker, creator of the Red Baron's famous DR-1 triplane, was born. 1892: Donald Wills Douglas, of aircraft design fame, was born. 1912: An electric starter first appeared in cars to replace the hand crank. 1914: Hiram Maxim, with $50 in backing by the Radio Club of Hartford, proposed the formation of the American Radio Relay League (ARRL). 1917: America formally entered World War I. 1927: William P. MacCracken, Jr. earned license number '1' when the Department of Commerce issued the first pilot's license.1938: DuPont researchers accidentally discovered polytetrafluoroethylene (PTFE) and was marketed as Teflon. 1954: The TV Dinner was first sold by Swanson & Sons. 1965: The first U.S. commercial geosynchronous communications satellite, "Early Bird" Intelsat 1, was launched. 1973: Pioneer 11 was launched to Jupiter and Saturn. 1992: Prolific science fact and fiction writer Isaac Asimov died. 1998: The Dow Jones Industrial Average (DJIA) closed above 9,000 for the first time.

| 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.

ERZIA (RF amplifiers, wireless, communications) - RF Cafe RF Cascade Workbook 2018 by RF Cafe
Rohde & Schwarz USA (RF Component Pocket Guide) - RF Cafe
About RF Cafe
Kirt Blattenberger - RF Cafe Webmaster
Copyright: 1996 - 2018
Webmaster:
    Kirt Blattenberger,
    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:  AirplanesAndRockets.com

spacer