Was this Technics set up for Radio or Nightclub?

It is for a night club and was probably a semi permanent installation. The portable DJ set ups come in cases. 
The arms and the cabinet are awful but you could mount the drives on new plinths mount new arms and sell the second unit to pay for the whole show. Would be fun!

@lewm , Yes, it switches back and forth between the turntables and controls volume. It is a cheap miniature of what is used in radio stations.
The U of Vermont had a radio station run mostly by the students. I served as a DJ for 2 years. Lots of fun. The highlight of my career was getting to interview Return To Forever. Corea was heavily into Scientology at the time and made no sense as far as I could tell. Al Di Meola did not say a word other than hello, Lenny white was the most grounded of the lot and Stanly Clark was painfully dumb but cheerful and friendly. He was also one of the most talented bass players of the day. Still is. I think he was the first to do that thumb thing where they wack the string making a staccato note. It became the "thing" several years later.