Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

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.

 

Body Type Transistor Hearing Aids

Radioear Model 820 Transistor Body Hearing Aid

The Radioear Model 820 hearing aid was manufactured by Radioear Corporation of Pennsylvania, in February, 1953. It was Radioear's first transistor hearing aid.

This 3-transistor hearing aid measured 2⅞" by 1⅞" and is ⅞" thick. It weighed 4˝ oz. without its battery.

It had a chrome front and back with cream plastic sides and top.

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Top view of the Radioear Model 820 showing the volume control/on-off wheel (left), the t-coil/tone switch (center) shown in the t-coil position and the receiver jack (with receiver cord plugged in) (top right).


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The back of the Radioear Model 820. Notice the pocket clips on each side.

 

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The battery compartment of the Radioear Model 820. It used a single AA-sized battery.

The recessed screw (mid left) is to adjust the tone for "L" (low) and "H" (high) frequency emphasis.

 

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The Radioear Model 820 in its original case.

 

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The original case for the Radioear Model 820.

 


 

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