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CoCo2 Composite Board 2

CoCo2 Composite Video Out Board with Sound 2

I have reverse-engineered the circuit from the original Color Computer 2
Factory Composite board found in certain models.

I've put together board designs based on this circuit to help fill the need for some
decent (non RF modulator) video output options for the Motorola MC6847.
More specifically, for the Tandy Color Computer 2.

The board is a direct replacement for the RF modulator, requires no
modifications to the case, and uses the channel switch to select between B&W / COLOR.

Output appears to be very good.  I would say considerably better than the simple reference
circuit in the MC6847 data sheet, which was all I'd been able to find previously.