Magic eye tubes, commonly used in tube radios as tuning indicators, are becoming extremely rare and expensive. Unfortunately, it is also the one tube in a tube radio that is visible to the outside, and greatly appreciated as a symbol of the vintage look of these sets. The tuning eye gets more Oooos and Aaaahs the any other aspect of the radios once restored.
It has long been debated that the life of these tubes can be extended by increasing its supply voltage. While this fix will probably not be enduring, it can at least assist in prolonging the life of these parts.
I decided to record an experiment with a very burnt-out specimen to determine whether it would make a diference.
Have a look at the results for yourself.
Enjoy.
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7 сен 2024
