OK. Back in The Day, CCA built and housebranded a lot of stuff. They moved here (Atlanta to the 'burbs) some years ago, and built transmitters until they bankrupted several years back and were liquidated. I remember a remote control and an audio limiter with CCA on them. They also had consoles and the like.
Dr. Bernie Wise of Energy - Onyx might have some information on the machine. Also try Hugh Anderson and/or Jerry Meier (sp? Myer perhaps?)). Hugh was one of the lead designers for CCA for a long time, and Jerry ran thei9r Field Service. Jerry still does field work on the CCA transmitters as an individual. Almost certainly one of those three people could give you some background on that cart machine, if it was a CCA product.