Thanks to John K9JII and some transport leg work by my son Tom KC9JGD, I now have a Collins 32S1 Transmitter with its power supply to match the 75S1 Receiver acquired from George W9EVT.
Mark KE9PQ offers newly fabricated “slave cable” sets for the S-Series, and I’ve set ordered and on the way.
Hoping by the end of September to be regularly on the air with this Vintage Collins S-Line set up.
Now what is really neat about these units is that their serial numbers and other information date them to be the same age as I am! More on this when I get some confirming help from perhaps the Collins Collector’s Association or other experts.