Rion Model H-525 "Rionet" Vacuum Tube Hearing Aid
The Rion Model H-525 "Rionet" vacuum-tube hearing aid was made
by the Rion Co. Ltd in Tokyo, Japan in 1954.
The Rion Model H-525 "Rionet" model measured 3⅝" x 2¼" x
¾" thick and weighed 5 oz without the batteries.
The Rion Co. kept on making vacuum tube hearing aids until 1956,
although the other hearing aid manufacturers quit making them in 1953.
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Rear view of the Rion Model H-525 "Rionet" hearing aid. The
whole back swings down to reveal the battery compartment.
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Top view of the Rion Model H-525 "Rionet" hearing aid showing the
on-off switch (left corner) and the 0-8 volume control wheel (right
corner). The recessed receiver cord jack is in the center. Immediately
above it (to the front) is the button to release the catch on the
battery compartment door.
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View of the battery compartment of the Rion Model H-525 "Rionet" hearing
aid. This hearing aid took 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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The Rion Model H-525 "Rionet" in its original case. |
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Outside view of the Rion Model H-525 "Rionet" hearing aid's leather case.
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