Rochester "Silver" Vacuum Tube Hearing Aid
The Rochester "Silver" vacuum-tube hearing aid was made by Rochester
Acoustical Laboratories, Inc. of Rochester, MN in 1949. It contained 3
sub-miniature vacuum tubes.
The Rochester "Silver" model measured 3⅛" x 2⅛" x
⅞" thick and weighed 5¾ oz without the batteries.
An unusual feature of this hearing aid is that the case was
sterling silver.
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Front view of the Rochester "Silver" hearing aid showing the
ornate microphone grill with the pocket clip over it (top center).
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Rear view of the Rochester "Silver" hearing aid showing the
battery compartment door (lower half) and the name "Rochester" upper
center and just above the hinge, the word "Sterling".
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Top view of the Rochester "Silver" hearing aid showing the
2-position tone switch (front center) in the "Lo" position, and the
receiver cord jack (right).
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Left side view of the Rochester "Silver" hearing aid showing the
on-off/volume control wheel (upper left).
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View of the battery compartment of the Rochester "Silver" hearing aid.
A round
RM-1 1.4 volt mercury "A" battery went in the "well" (bottom left).
The "B" battery compartment (right) housed a 30 volt "B" battery (Olin
type 0816 or equivalent).
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The case contained a card containing instructions on maintaining the
look of the sterling silver case.
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The Rochester "Silver" in its original case. |
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Outside view of the Rochester "Silver" case.
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