The record contains a module with two vacuum tubes and supporting circuitry, which is housed within the chassis. There is a connecor at the bottom of the module with 24 contacts. There is a handle at the top. There is a red tag tied to the handle reading, "THIS UNIT IS NOT TO BE USED TO REPLACE A STANDARD UNIT. THIS UNIT MODIFIED." There is also a handwritten tag taped to the front of the module reading "NR3138-Box5-#3 PPGBA."
