More speculation...
According to the narration, it's an "...electronic wireless wizard remote control" with seven functions. A few years after this design, some consumer remotes were made with ultrasonic chimes struck by a small hammer when the user pushed a button. The tone was detected by a microphone and processed in a transistorized base unit.
Maybe this one gets its 14-functions with an ultrasonic transistorized tone generator in the remote ? and all or mostly tubes in the receiver/control unit? with plate relays driving dc motors?
It's gotta be an interesting schematic.