Source for QSI 5022 CD-4 demodulator I C

[BobZ]

Yes I was there on the last one before it fell apart. The IEEE Radio and TV Consumer conference was also great in Atlington Hights at that time.

Forgot I still have 2 more QSI 5022 in my Lou Dorren Demo CD-4 Decoder set in sockets but I will be selling the unit on eBay soon.
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Did get it on eBay today. Thought I still had some of Lou's circuit boards but couldn't find any. Only have many RCA records of the '75 series. Back than RCA did change the record molding compound for low noise but i don't know if all Mfgs went with it.