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

Telex Model 17 "Telemaster" Transistor (Body) Hearing Aid

The Telex Model 17 "Telemaster" transistor (body) hearing aid was manufactured by Telex Communications, Inc. of St. Paul, Minnesota in 1954.

This hearing aid was given Model number 17 (instead of a 900 series number—probably 955) to commemorate Telex' 17th year in the hearing aid field.

This hearing aid measured 3½" x 1 15/16" x ⅝" (8.9 x 4.9 x 1.6 cm) and weighed 3.5 oz. without batteries (100 g). It used 5 transistors.

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Front view of the Telex Model 17 "Telemaster" transistor hearing aid showing the gold colored pocket clip (upper center).

 


 

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Close-up of the pocket clip of the Telex Model 17 "Telemaster" transistor hearing aid showing the microphone screen (center) and the Telex logo (bottom)..


 

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View under the raised pocket clip of the Telex Model 17 "Telemaster" showing the 3 round holes for the sound to reach the microphone.


 

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Top view of the Telex Model 17 "Telemaster" transistor hearing aid showing the on-off switch/1-4 volume control wheel (left) and a small two-position switch of unknown function (extreme bottom right).


 

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Left side view of the Telex Model 17 "Telemaster" transistor hearing aid. The receiver cord jack is near the bottom (right).


 

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Left side view of the Telex Model 17 "Telemaster" transistor hearing aid showing the receiver cord plugged in.


 

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Left side view of the Telex Model 17 "Telemaster" transistor hearing aid showing the receiver cord unplugged. Note the unusually long pins on this plug.


 

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Rear view of the Telex Model 17 "Telemaster" transistor hearing aid showing the LO (low), N (normal) and HI (high) 3 position tone control (mid right) and the battery compartment door (bottom). Near the bottom of the battery compartment door are the words "Telex" and below it "St. Paul, Minn. U.S.A."

 

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Inside rear view of the Telex Model 17 "Telemaster" transistor hearing aid showing the 5 transistors under the clear plastic "seal". Note the black power transistor on the left, the 3 light blue ones (upper center) and the 4th light blue one (diagonal on right).


 

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Inside rear view of the Telex Model 17 "Telemaster" transistor hearing aid showing the clear plastic "seal" that covered the 5 transistors (and kept unauthorized fingers out).

The inscription reads, "Guarantee is void if seal is broken". Below that is "Telex, Inc." and "St. Paul, Minnesota, U.S.A."
 

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View of the battery compartment of the Telex Model 17 "Telemaster" transistor hearing aid showing the two bays for the batteries (left), the switch for using either 2.6 or 5.2 volt batteries (upper right) and the Telex name and Model number (17) and the word "Transistor" below it (right).

This hearing aid used two 1.4 volt "N" sized 401 batteries (such as the Eveready E401-E mercury battery), or two "N" sized 152 batteries.
 

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Inside view of the lid of the battery compartment of the Telex Model 17 "Telemaster" transistor hearing aid showing the instructions for the two-position battery switch.

It reads, "Important" and "This instrument will operate on either 2.6 or 5.2 volts. See your Telex Consultant for proper switch adjustment." and "Remove batteries when not in use."

The battery switch (bottom right) is set for using two 1.3 volt batteries.

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Bottom view of the Telex Model 17 "Telemaster" transistor hearing aid showing the serial number (4Y366) (left of center).
 


 

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Front view of the V1receiver of the Telex Model 17 "Telemaster" transistor hearing aid showing the name "Telex" (top) and "V1" (bottom). An ear mold snapped onto the receiver nubbin.


 

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Rear view of the of the V1 receiver of the Telex Model 17 "Telemaster" transistor hearing aid showing the plain design of the V1 receiver.


 

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Front view of the V2 receiver of the Telex Model 17 "Telemaster" transistor hearing aid showing the name "Telex" (top) and "V2" (bottom). An ear mold snapped onto the receiver nubbin.


 

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Rear view of the of the V2 receiver of the Telex Model 17 "Telemaster" transistor hearing aid showing a slightly different design and color than that of the V1 receiver.


 

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Close-up of the receiver and plug of the Telex Model 17 "Telemaster" transistor hearing aid showing the rather long pins on the receiver cord plug.

This hearing aid was donated to the Museum by Lee Carda of Gillette, WY.

 

 

 

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