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v3101 update - cool it works.

I bit the bullet and figured out what the pinouts were on the rear connectors of this unit and what kind of power supply it would need. It turns out that it has internal voltage regulators for b+, b-, and the metering b+ all 15 volt. I searched through my junk pile and found an old vcr. I scrapped the transformer for a center tapped unit and modified the circuit board to pump out 24v +-.