RF Cafe Software

RF Cascade Workbook 2005 - RF Cafe
RF Cascade Workbook

Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
Smith Chartâ„¢ for Excel
RF & EE Symbols Word
RF Stencils for Visio

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2016
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

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Day in Engineering History Archive - January 21

January 21

Concord SST Went Into Service - Please click here to visit RF Cafe.1901: Elisha Gray, who missed being labeled as the inventor of the telephone by mere hours when Alexander Graham Bell beat him to the patent office, died. 1901: American engineer Allen Du Mont, who invented the first commercial cathode ray tube, was born. 1954: The USS Nautilus, the first nuclear-powered submarine, was launched. 1970: The first wide body jet was put into service as the PanAm Boeing 747 made its first flight between from New York's JFK Airport and Heathrow Airport in London. 1976: The supersonic Concorde jet (SST) was put into service by Britain and France. 1979: Neptune became the outermost planet as Pluto's highly elliptical orbit brought it inside Neptune's. 1981: Iranian terrorists released embassy hostages after 444 days captivity.

| 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.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-) A couple 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.