517
Item nr.
Fully tubed hearing aid.
Production | Switzerland, 1954. |
---|---|
Tubes | 2x DF64, DL68. |
Cabinet | Metal. Size 6x9.5x2cm. |
Power | Batt 1.5 and 22.5V (Eveready 412). |
My request for information was routed to the Dutch Phonak office ("Because You are best serviced by our representative in your own country"), but because this branch only exists since 1999, they couldn't give any information.
Inside the battery lid one finds a little sticker with instructions on how to place the batteries. Like in the earliest home tube radios, the heater battery is called A and the plate battery is B.
Obtained | 6/2020 from Antoine; sn=31664. |
---|---|
Condition | 9. |
Disposed | Sold 3/2024. |
Everything inside is of course very tiny. Above the output tube (the larger one) is the output transformer.