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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Tycho Brahe first observed the supernova that suddenly appeared
in the constellation Cassiopeia. 1851: Alvan Clark was awarded the
first U.S. patent for a refractor
telescope design. 1911: Radar pioneer and head of the National
Security Agency Scientific Advisory Board panel on Electronics
Louis Nicot Ridenour, was born. 1918: World War I came to an
end when the Allies and Germany signed an armistice - this day became
Day in the United States, with celebrations traditionally beginning
the 11th hour of the 11th day of the 11th month of the year. 1921:
Tomb of the Unknowns was dedicated at Arlington National Cemetery.
1930: Albert Einstein and Leó Szilárd are issued a patent for their
Einstein refrigerator. 1938:
Typhoid Mary (Mary Mallon), famous for spreading typhoid fever
in NY, died. 1966: The U.S. launched
Gemini 12 from Cape Kennedy, FL, where after the craft circled
the earth 59 times before returning. 1980: Saturnian moon
Epimetheus was discovered by the Voyager spacecraft. 1981: The
USS Ohio was commissioned as the first Trident Class nuclear
submarine. 1993: In Washington, D.C., a
bronze statue was dedicated honoring the more than 11,000 women
who had served in the Vietnam War. 2004: Terrorist leader
Yasser Arafat finally died.
of Time, by Terry Kelly (lyrics above)