Early Telephone Apparatus
Description:
Long distance transmitter, 1886. The search for better ways of transmitting the voice led to the development of this model which used a platinum diaphragm for better long distance transmission. The instrument shown in this picture actually was used by Bell and later Theodore N. Vail, organizing genius of the Bell System. Reproduction by John Infurna.
Title:
Long distance transmitter
Date:
1886
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