Just checked in the back. This is the RA-101-A chassis. I looked quickly, but I saw what looked like a pair of Westinghouse WL-807 tubes on the chassis. Big honkers with ceramic bases.
"Versions with the -A suffix use a dangerous 60 Hz 4.4 kV transformer and a dual 2X2 voltage doubler to supply 12 kV DC to the CRT anode."
Yup, not plugging it in
I also have what appear to be the engineering blueprints of the schematic of the set. Each foldout diagram is a couple feet in length, at least.