Charles E. Apgar
American amateur radio operator · United States · Scientists · Lived 1865 to 1950 · aged 85
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Something wrong?Charles Emory Apgar was an American business executive and amateur radio operator. He is known for making early recordings of radio transmissions at the start of World War I.
Text from Wikipedia, CC BY-SA 4.0
Photos 11
The station at his home including equipment that he built
Circuit diagram of his station connected to a phonograph recorder.
Painting on the cover of the August 1915 issue of The Electrical Experimenter titled Sayville (N. Y.) Wireless Receiving German War Report.
Sayville wireless station and umbrella antenna, 1915.
Apgar producing "canned" wireless messages on his recorder, 1915
The "perforator apparatus" used at Sayville to punch Morse code on paper tape.!["The above 'code' diagram shows how secret cipher messages could be interspersed through regular messages."[38] In example "No 2" the Morse code for the letter "B" has been changed to "6E" by adding two extra dots.](https://thumb.wikimedia.org/wikipedia/commons/thumb/5/51/Obfuscated_Morse_code.png/500px-Obfuscated_Morse_code.png?utm_source=en.wikipedia.org&utm_campaign=parser&utm_content=thumbnail)
"The above 'code' diagram shows how secret cipher messages could be interspersed through regular messages."[38] In example "No 2" the Morse code for the letter "B" has been changed to "6E" by adding two extra dots.In their orbit
Child: Virginia ApgarScientists from the United States 6
About this person
Charles Emory Apgar was an American business executive and amateur radio operator. He is known for making early recordings of radio transmissions at the start of World War I. The recordings that he made of a wireless telegraphy station owned by a German Empire-based company operating from the United States were used to expose an espionage ring. They provided evidence of clandestine messages being sent in violation of a prohibition intended to maintain United States neutrality. This proof of illicit operation led to the government seizing control of the facility to stop the activity. Apgar's efforts received extensive coverage in newspapers and technical science magazines at the time. His contributions were praised by government investigators. Publications continued to remark on his work many years later.
Text from Wikipedia, CC BY-SA 4.0
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