10-05-2025, 12:23 AM
Hi Bridkarl,
Is that no load values or with all tubes in? Nominal filament voltage for all tubes is 6.3V, but these are car radio tubes and running at 7V in a car is not unheard of. This set should have about 185VDC into the output transformer, and 270V at the junction of the rectifier cathode and Cap # 61.
The power spec is 115VAC. 120V is about 4.3% higher. This would make the filament value approximately 6.6 V.
Is that no load values or with all tubes in? Nominal filament voltage for all tubes is 6.3V, but these are car radio tubes and running at 7V in a car is not unheard of. This set should have about 185VDC into the output transformer, and 270V at the junction of the rectifier cathode and Cap # 61.
The power spec is 115VAC. 120V is about 4.3% higher. This would make the filament value approximately 6.6 V.
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Best Regards,
MrFixr55
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