April 1945 QST
 Table
of Contents
Wax nostalgic about and learn from the history of early electronics. See articles
from
QST, published December 1915 - present (visit ARRL
for info). All copyrights hereby acknowledged.
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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
actress Hedy
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
War Bonds.
Delco Radio Advertisement
Delco Advertisement
Posted October 14, 2019
(updated from original
post on 11/14/2012)
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