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I can't recall an RCA metal cabinet "regular" set beyond the XL-100 vertical chassis sets (MA series modules). Teknika and Sanyo (91C 19" series) made metal cabinet sets well into the early 80's, as did Hitachi. I've mentioned previously a Engineering-use only metal cabinet GE PC-chassis set we got when the Portsmouth plant closed. She's a junker now.
The US Navy had Teknika metal cabinet sets with internal isolation transformers on ships in the mid-1980's. We had one on 24/7 in our shop on the Forrestal.
I can recall an RCA Mural (hotel/motel/hospital) metal cabinet set using either a CTC68 or CTC72 chassis - seems it didn't have the bonded yoke, so it may have been the earlier chassis. We had some from the military hospital system with the hospital grade plugs and 75-ohm f-fitting only RF input. Sadly, I recall junking them, particularly flattening the cabinets after removing the corner braces with a chisel. This was late '88/early '89.
Cheers,
__________________
Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
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