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On-line 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. |
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Vacuum Tube Hearing Aids:
1921-1953 |
Challenger Custom-Built Vacuum Tube Hearing Aid
The Challenger vacuum tube hearing aid was custom
built for customers at the Hearing Device Centre in Vancouver, B.C. in
the late 1940s.
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It was a 1-piece hearing aid and used three Raytheon
miniature hearing aid vacuum tubes (see right).
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It was powered by a 412E 22˝ volt "B" battery, and an AA size carbon
zinc 1˝ volt "A" battery that fit in the battery compartment (shown
right). |
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Click picture for larger view |
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The logo on the Challenger reads: "Custom Built Challenger, Hearing
Service Center, 405 Birks Bldg, Vancouver, BC"
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(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
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