De_Forest_xmtr_broadcasting_presidential_election_Nov_1916.jpg
Summary
Description De Forest xmtr broadcasting presidential election Nov 1916.jpg |
English:
One of the earliest radio broadcasting events,
Lee De Forest
's broadcast of the
Wilson-Hughes presidential election
returns from the De Forest laboratories, Highbridge, New York, November 7, 1916. An estimated 7,000 radio listeners within 200 miles of New York City heard election returns provided by the
New York American
newspaper offices, interspersed with patriotic music. The photo shows chief engineer Charles Logwood operating De Forest's 500 watt transmitter using two of his new high power "Oscillion"
triode
vacuum tubes
(visible center)
at a plate potential of 1500 volts. In the foreground is the phonograph, which played "The Star-Spangled Banner", "America", "Dixie", "Yankee Doodle" and other patriotic songs between returns.
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Date | |
Source | Retrieved April 9, 2015 from "Election Returns Flashed by Radio to 7,000 Amateurs" in Electrical Experimenter magazine, The Experimenter Publishing Co., New York, Vol. 4, No. 9, January 1917, p. 650 archived on http://www.americanradiohistory.com |
Author | Unknown author Unknown author |
Licensing
Public domain Public domain false false |
This media file is in the
public domain
in the
United States
. This applies to U.S. works where the copyright has expired, often because its first
publication
occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See
this page
for further explanation.
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This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the
rule of the shorter term
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Wikipedia:Public domain
and
Wikipedia:Copyrights
for more details.
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