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Interpreting Amplitrex 1000 Reading

I have a Mullard 5AR4 that was tested some time ago with the following results written on the tube box: 14V - 431V
7V - 429V
Can someone interpret these numbers?


Edits: 03/28/24

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Topic - Interpreting Amplitrex 1000 Reading - Steelhead Mike 13:27:27 03/28/24 (4)


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