RF Cafe Software
About RF Cafe
1996 - 2022
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.
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Jules-Louis-Gabriel Violle, who made the first high altitude
measurement of the
solar constant and after whom the
standard of luminous intensity was named, was born. 1904: The
first true electron tube, a
thermionic valve, was patented in Great Britain by John Ambrose
Fleming. 1914: The
Federal Reserve Bank officially opened. 1915: A patent was issued
for the first
Coca-Cola bottle with the trademark curved shape. 1927: The
USS Saratoga was commissioned as the Navy's second aircraft
carrier. 1965: The Russian
3 spacecraft, which became the first to reach the surface of
another planet, was launched. 1973: President Nixon authorized construction
Trans-Alaskan Pipeline. 1974: The first signal was broadcast
into space from the 1000 foot radio telescope in
Puerto Rico. 1977: Close Encounters of the Third Kind
opened in theaters. 1984: The space shuttle Discovery,
returned to Earth with the first two satellites ever plucked from
space. 2004 NASA's
X-43A scramjet set a new record of Mach 9.6.