Thread: UY41 Valve.
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Old 22nd Oct 2019, 1:05 pm   #7
Maarten
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Join Date: Dec 2007
Location: Haarlem, Netherlands
Posts: 4,184
Default Re: UY41 Valve.

Apparently from that thread, the UY42 was from some point in time deemed suitable for higher voltages. This is the same as I remember from the rumours, there might even be a Dutch service bulletin on it regarding valve replacement in certain sets. If they had relabeled UY41 production as UY42, this would have shown up in the code lists. A bit to my surprise it doesn't, so it's likely just some improvements to the UY42 specs.
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