The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

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Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.

Carbon Hearing Aids: 1900-1939

Radioear B-5A Carbon Hearing Aid

The Radioear B-5A carbon hearing aid was manufactured by E. A. Myers & Sons Ltd. of Pittsburg, PA in 1932.

The Model B-5A consisted of a carbon transmitter (microphone) 2½” in diameter that plugged onto the top a metal battery case. The battery case held two “C” size batteries giving an operating voltage of 3 volts.

This hearing aid used a small black miniature receiver onto which an ear mold was clipped.

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The rear shows the on-off switch which also functions as a volume control. Full volume is reached at the "On" position.

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