You can find RCA R-9 here:
http://www.nostalgiaair.org/Resources/314/M0040314.htm
Norm
:Columaire Jr. (1932) Looking for a schematic, the RCA R-9 chassis is alike according to posts on web , most reading from 2010 and back, any new updates or has actual schematic surfaced for this model. Any input would help.
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