April 1945 QST
Wax nostalgic about and learn from the history of early electronics. See articles
QST, published December 1915 - present (visit ARRL
for info). All copyrights hereby acknowledged.
Here is an advertisement for Delco radios
that I scanned from page 91 of my copy of the April 1945 QST magazine.
"'Control the Air' has a new meaning today." That's the tag line referring to the
need to dominate wireless communications in the effort to conduct effective warfare.
Radio certainly wasn't a new science in 1945, but secure communications - including
spread spectrum techniques - was a vital technique both for transmitting and receiving
messages and for jamming the communication of our enemies. Even though Hollywood
Lamarr and music composer
George Antheil came up with the concept
of frequency hopping spread spectrum in the early years of World War II,
the U.S. Department of War (now known by the more
socially acceptable and less formidable handle of Department of Defense) stuck
mostly with codebook encryption techniques through the end of the war. Delco, as
was common in the World War II era, encouraged citizens to buy
Delco Radio Advertisement
Posted October 14, 2019(original 11/14/2012)