This is the description of a club in California called Radio City. Seems more the place they were playing then. I copied it from Wikipedia. Just searched Radio City 80’s club California.
A small, dank, concert venue for upstart heavy metal bands in the 1980's.
There were actually three nightclubs located in the strip mall that was once on this site, Radio City, The Woodstock and, Cartoons & Capers.
Most of the strip mall was destroyed by fire in November 1985.
Damn... Oct 31 85... Radio City in Anaheim
Oh well thought they just tipped their hand for a surprise show