Complex sentence: The P-70 radar was designed as a static structure mounted on a two story building which housed the radar and power supply equipment as well as facilities for the radar operators, additional support facilities could be operated up to 2 km from the radar building.
Split into simpler sentences: The P-70 radar was designed as a static structure mounted on a two story building which housed the radar and power supply equipment as well as facilities for the radar operators. Additional support facilities could be operated up to 2 km from the radar building.