sighted four of Jupiter's moons (Io, Europa, Ganymede, and Callisto). 1785: Jean Blanchard and John Jeffries made
first air crossing of the English Channel from England to France in a
hot-air balloon (first international flight). 1904: Marconi established "CQD" (-·-· --·- -··,
CQ=be quite and listen, D=distress) as the first
international radio distress signal, but two years later, "SOS" (··· --- ···, Save Our
Souls) became the radio distress signal because it was faster to send by wireless radio. 1927: Commercial
transatlantic telephone service was inaugurated between New York and London. 1935:
Sir Alfred Ewing, the physicist who
discovered and named hysteresis, died. 1943: Serbian-American high voltage experimenter
Nikola Tesla died. 1980: The first solar-cell power plant was dedicated at Natural Bridges National Monument, UT (266,029 solar
cells in 12 producing 100 kW). 1998:
Richard Hamming, of error correction
code fame, died. 2004: American electrical engineer
Oswald "Mike" Villard Jr., who
developed over-the-horizon radar, died.
| Feb | Mar |
Apr | May |
Jun | Jul |
Aug | Sep |
Oct | Nov |
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.