DIY Solid State Multiplex Adaptor Plans?

[Findm-Keepm]

Originally Posted by Captainclock

That would probably be more along the lines of what I'm looking for, but it would of been nice to of found an original Magnavox Multiplex Adaptor for this radio but like I said not many of them come up on ebay anymore and when they do come up they ususally want close $100 for them (the cheapest one I saw on there was about $39.95 plus $20 for shipping which brought the price up to roughly $60 which is way out of my price range).

OEM MPX adapters were rare back in the day - one had to have a stereo amplifier to listen to stereo, and a new stereo with stereo FM was just a little more than the MPX adapter was. That, and the mortality of the coils and transformers was quite high, so most were scrapped, or shelved.