PU-12 Air Défense Command Post

BTR-60 PU-12 mobile air defence command post, for wargaming. These would typically work as relays between radar and air defence batteries so that they aren't in the same location but still share information on bearing and allow an automated guidance for batteries (i.e. one with the radar and a second with a SAM batterie)
Antenna pole is just an off cut of ~2mm filament, short for stowed, long for deployed with the antenna on the end.