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June 1947 Popular Science
 [Table of Contents]
Wax nostalgic about and learn from the history of early
electronics. See articles from
Popular
Science, published 1872-2021. All copyrights hereby acknowledged.
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Long distance radio
communications made significant advances during World War II. It had to.
With as widespread and intense as fighting was, war rooms needed as much and as
accurate information as possible from land, sea, and air forces. Satellite
systems were more than a decade away when this news item on RCA Radiograms
appeared in a 1947 issue of Popular Science magazine. While improved
transmitters, receivers, and antennas were extremely important, perhaps the most
significant factor in achieving reliable, predictable long distance
communications was a better understanding of the Earth's upper atmosphere and
how it affected the transmission of electromagnetic waves. No direct
measurements of ionospheric heights and conduction levels had been made at the
time, so it was a combination of theoretical and operational experience that
determined parameters necessary for success. After the war, when some strategic
secrets were divulged to the public, businesses and even private citizens were
able to enjoy the newfound benefits. Many of the companies that helped develop
the wartime technology were able to exploit that effort afterward.
Radio Corporation of America Radiograms
 RCA Communications' new world-wide automatic tape relay radio system speeds Radiograms.
New wings for words around the world!
Radiograms "Via RCA" to and from overseas points now are processed by automatic
machines which speed your messages through such gateway cities as New York, London,
San Francisco and Manila, without delay.
This advanced technique in international radiotelegraphy is the result of wartime
research and development. It gives to private messages the same speed, accuracy
and dependability which were attained through its use by the U. S. Army Communications
Service during the war.
RCA Laboratories - one of the world's foremost centers of radio and electronic
research - is continually pioneering and advancing radio communications in service
to the Nation and the public.
When you buy an RCA Victor radio or television receiver, Victrola radio-phonograph,
or phonograph record, you are getting, thanks to RCA research and engineering, one
of the finest products of its kind science has achieved.
"Victrola" T. M. Reg. U. S. Pat. Off.
Radio Corporation of America, RCA building, Radio City, New York 20. Listen to
the RCA Victor Show, Sundays, 2:00 P. M., Eastern Daylight Saving Time, over NBC.
At RCA Communications, "Package Sets" contain an automatic sending and receiving
unit for a foreign gateway city. Messages in tape form and received through these
machines, are ready for delivery or immediate transmission to any part of the world.
Radio Corporation of America
Posted December 8, 2023
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