Limitations of Magneto Transmitter

Cyclopedia of Telephony and Telegraphy · 1919 · p. 2
For reasons not finally established, the ability of the magneto telephone to produce large currents from large sounds is not equal to its ability to produce large sounds from large currents. As a receiving device, it is unexcelled, and but slight improvement has been made since its first invention. It is inadequate as a transmitter, and as early as 1876, Profe or Bell exhibited other means than electromagnetic action for producing the varying currents as a consequence of diaphragm motion. Much other inventive effort was addre ed to this problem, the aim of all being to send out more robust voice currents. IMG:384091999325875926_fig006_t.gif.png:Illustration_ Fig. 6. Telegraph Equipment Converted into Telephone Equipment Fig. 6. Telegraph Equipment Converted into Telephone Equipment View full size illustration.
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