Bell Labs Mechanical Sets

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Mechanical Television

Bell Labs Matrix Screen Receiver

In 1927 Bell Labs built a large screen TV set using a specially designed neon lamp with 2500 individual anodes, arranged in 50 rows of 50 anodes. A huge switch was attached to the motor, routing the electrical signals to one anode at a time. This set was used to televise Herbert Hoover in a demonstration in April of 1927. This was accomplished both by wire and by radio on experimental station 3XN from Whippany, N. J., 22 miles from New York, to the Bell Laboratories building in New York City where the speakers and performers were readily recognized on the receiving screen. The voices of the persons at Whippany were transmitted, and reproduced by means of a loudspeaker. Here is a 1928 magazine article.

Early Television