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I have had both. If I remember correctly, the relay board is mounted vertically in the white face and horizontally in the black face. Not sure of any other major differences.
From what I know the white is the earlier model with a different relay section mounted vertical. Other than that I believe there is a model that takes a 600v transformer but of all the 300a's ive never seen one . Everything else is the same from what I see.
Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
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