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 World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while typing up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.
Wax nostalgic about and learn from the history of early electronics. See articles
from Short Wave Craft,
published 1930 - 1936. All copyrights hereby acknowledged.
This 1935 article found in
Short Wave Craft magazine quotes the station engineer as saying that they
transmitted with only 5 kW into the farm of directional antenna arrays, and that it
was sufficient to provide what was evidently very high quality reception to many
remote regions of the world. Adolph Hitler had become "Führer und Reichskanzler" the year before, with plans already in
the works to dominate the world. Troops invaded Poland on September 1, 1939,
officially beginning the Second World War. DJC's global reach was used extensively
for propaganda during the war.
the Shortwaves" website has a digitized audio file of the 78 rpm greetings record
that German shortwave radio station JDC would send to American listeners upon
"Broadcasting House" Berlin, where the studios of the German short-wave
station and of the Deutschlandsender and the Reichssender Berlin are located.
"The many letters of comment which have been pouring into the office since our Short-Wave
Station opened its broadcasting activities on April 1, 1933, are a highly appreciated
proof that our station has become a regular feature of the American Radio listener's
evening entertainment," says a special report from DJC. "It has been very pleasant, indeed,
and very helpful for the technical side of our work too, to establish this close personal
touch with our U.S.A. audience.
"While in 1933 our station, located at
Zeesen, a village in the neighborhood of Berlin,
transmitted its programs to North American listeners only, we have in the time which
elapsed since, widened the circle of our radiations to South America, Africa, and the
Far East. The system of our "overseas" broadcasts will be completed by the end of 1934
by building up two additional transmitters to Central America and Australia.
The short-wave station and aerial masts at Zeesen, near Berlin.
Zeesen is thus developing into one of the most important centers of broadcasting
in Germany, and we wish that our North American listeners could not only enjoy our radiations,
but also the pretty sight of our many antennas overlooking the typical Brandenburg fir-woods
in Zeesen. Many of our American friends have been surprised to learn that the transmitting
power of our station, which they assumed, judging from the excellent reception, to be
quite extraordinary, amounts to 5 kilowatts, in the antennas only. This power has proved sufficient
to reach any part of the world with adequate volume. These results have been obtained
due, primarily, to use of directional antennas which concentrate wave beam on those zones
for which it is intended. Our North American listeners certainly get the bulk of our
programs, being able to tune in to Germany every night.
This is one of the funniest videos ever:
Posted December 22, 2017
Please Support RF Cafe by purchasing
my ridiculously low−priced products, all of which I created.