Should have mentioned it, but I was thinking of "What if stereo TV existed back in the early 60's. What would they have built to receive it?" Perhaps they would have had the FM stereo detector circuit do double duty, with relays or such switching the resonance of the tuned circuits from 19 and 38KHz to 15.7 and 31.4KHz. Probably switching extra capacitence like my mods above.
This would apply to those big consoles with the stereo FM and record player and of course the 25" color TV. If I had one, I'd be tempted to build this mod into it....
