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Model 91 cathedral with gain control switch
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Hi everyone. Thanks to all that had a look at this post. I found another change when I went to rebuild #27 Bakelite block It was numbered 3903 with no AF or any alpha designation on the side of the block. The parts list shows it as 3903 AF .01 single for single speaker, that is what I have. It is actually a .01 dual and the second capacitor is coupled in parallel with the #9 block .015 and 200 ohm resistor. I finished the restoration and left everything as it was. The radio plays very well. The shadow meter works good and the added gain control switch works good too. I hope this helps anyone that runs into this model 91 with these changes.
Mike


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RE: Model 91 cathedral with gain control switch - by Mikeym53 - 07-28-2025, 01:34 AM



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