[ARC5] Setchell Carlson 509 receiver

[Hubert Miller]

Model 509 uses a battery pack for light planes with no electrical system ( is what i read elsewhere on the BC-1206 receiver,
an excellent article.)  So i think it uses a 1.5 and 90 volt battery pack. I could not find a schematic online - i printed out the
BC-1206 schematic, and i'm thinking later today i might waste an hour or two drawing out the 509 schematic. Oddly enough,
this one DOES have the AAF acceptance stamp on it.
-Hue Miller