[jake wells]

Have two NOS tubes one is a US NAVY 5Y3 and the other is a ken rad 5Y3. The radio works fine with either but is this a common issue for these types of tubes? Let me know what you fellas think.
US NAVY 
Audio B+ 280
Rect B+ over 300 my meter only goes to 300
Rf, if, det, B+ 201
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Ken rad
Audio B+ 249
Rect B+ 302
Rf, if, det, B+ 179