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.

 

Vacuum Tube Hearing Aids: 1921-1953

Micronic Model 202 Vacuum Tube Hearing Aid

The Micronic Model 202 one-piece vacuum tube hearing aid was made by Micro-Electronic Products, Inc. of Boston, MA in 1948.

The Micronic Model 202 vacuum tube hearing aid measured 4 3/16” by 2¼” by 13/16” thick (10.6 x 5.7 x 2.1 cm). Without batteries, it weighed  3.3 oz. (94 g).

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Front view of the Micronic Model 202 vacuum tube hearing aid showing the attractive aluminum front. The microphone grill consisted of 4 horizontal slots situated between 2 sea horses (upper front).

On the lower front, was the Micronic name and above it their logo—a crowned "M".

Note the pocket clips on each side (near the top).
 

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Top view of the Micronic Model 202 vacuum tube hearing aid showing the on-off/3-position tone control (left) and the volume control wheel (right).


 

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Rear view of the Micronic Model 202 vacuum tube hearing aid showing the swing down battery door (lower half).

 


 

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Top rear view of the Micronic Model 202 vacuum tube hearing aid showing the location of the model number (202).


 

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Rear side view of the battery compartment of the Micronic Model 202 vacuum tube hearing aid. The battery door swung down and out.
 


 

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Close-up view of the receiver cord plug of the Micronic Model 202 vacuum tube hearing aid. The receiver cord plugged into the top left side of the battery compartment. A most unusual place to be sure.

This plug slid into place from the right to the left (shown in its starting position on the right). Micronic used the Brush company's rather unusual plug and jack for this model.

 

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Inside view of the battery compartment of the Micronic Model 202 vacuum tube hearing aid showing the serial number (M 212181) on the metal divider between the "B" and "A" batteries.

Also,  note the receiver cord plug (top left) in it's proper position when plugged in.

 

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Close-up view of the battery compartment of the Micronic Model 202 vacuum tube hearing aid. This hearing aid used a 1½ volt "A" battery such as the Eveready 1015E and a 22½ volt "B" battery such as the Eveready 412E.

 

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View of the Micronic Model 202 vacuum tube hearing aid showing the receiver cord and two-prong plug (receiver missing).

 

 


 

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