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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1890: A patent was issued for the first jukebox. 1901: The Edison Storage Battery Company was organized. 1909: William Hansen, inventor of the klystron tube, was born. 1919: A U.S. Navy NC-4 flying boat completed the first transatlantic flight. 1937: The Golden Gate Bridge was opened to the public for foot traffic. 1930: Cellophane transparent adhesive tape was patented by inventor Richard G. Drew, who sold the patent to 3M. 1931: The first U.S. full scale (30 by 60 feet)wind tunnel for testing airplanes was opened in Langley Field Research Center, VA. 1931: Auguste Piccard and Charles Knipfer became the first humans to venture into the stratosphere when they rode their balloon to an altitude of 51,783 feet. 1941: The German battleship Bismarck was sunk by British naval and air forces. 1961: The first black light was sold. 1988: Ernst Ruska, an electrical engineer who invented the electron microscope, died. 1994: The highest temperature produced in a lab was a plasma temperature of 510 M°C in the Tokamak Fusion Test Reactor operated at Princeton.