01-20-2019, 05:28 PM
Looking at the parts catalog for 1937, I don't find the 30-2200 cap. It appears in the 1939 catalog. Looking at schematics for the 37-690, 38-116, 38-690, I don't find 18mfd caps used in the power supply. I suspect someone changed these early in its history. Did these radios have a slight amount of hum that someone was trying to get rid of? I'm thinking that I will stuff these with 10mfd Solens that I have in stock.