Bell Telephone Labs and AT&T give a USA public mechanical television demonstration over both wire and radio circuits. The demonstration was directed by Dr. Herbert Ives and Dr. Frank Gray. Pictures and sound were sent by wire from Washington D.C., to New York City. A wireless demonstration also occurred 22 miles away, from Whippany, New Jersey, to New York City.
The main part of the demonstration was a speech by Herbert Hoover, then secretary of commerce, which originated in Washington D.C. The 50-line pictures, transmitted at 18 frames per second, were received on a 2" x 3" screen. It was claimed that there was no difference in quality between the pictures sent by either wire or radio.
To the left is a newspaper report of this event, as told by "The Indianapolis Star", two days after the demonstration, on April 9th, 1927. (267K bytes)
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