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Old 10-07-2009, 01:25 AM
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Tubejunke Tubejunke is offline
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DuMont is the KING of power transformers! I remember my old RA-109A had this crazy thing that looked as big around as this one, but twice as tall. Wow! Dual LV rectifiers and all. I wonder if the HV rectifiers are dual. Mine were, but the 109 is a far different chassis.
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Old 10-07-2009, 12:29 PM
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Phil Nelson Phil Nelson is offline
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That transformer is a serious piece of iron. About six inches tall. I have a special machine for moving these heavy chassis. It's called my 23-year old son

On this chassis I spy two 5U4Gs and one 5V4 by the HV cage. Not sure if I have the right papers for this set. The crumpled schematic lists RA-103/104A/110A and shows two 5U4gs and two 6X4s. Eventually, I should get the right schematic. The serial plate in back says RA-103, serial #27171.

I'd love to get knobs for this set. The seller told me they were all lost, but last night I went through the box of spare tubes (39 good ones --Yay!) and found this one. So I need four more like this, plus the big tuner knob.

Phil
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