Luftvernsystem Vaktmann 73

Vaktmann 73 is a battlefield integrated air defense system developed by Ringerike used to link the fire units of Luftvernmissil 73 and Luftvernkanon 58s to a central point of control, it consists of a towed trailer, mounted on the roof of which is a pulse doppler search radar, a pulse doppler tracking radar and a co-axial television camera. The trailer also houses the crew of two and a small petrol generator. Vaktmann 73 is an all-weather air defense system for the control of aircraft at low altitude and at low and medium altitude range up to 3,000 m. The maximum effective distance is given as 4,000 m. The system takes the air surveillance, target acquisition, calculation of the derivative-action values and the control of two Oerlikon 35 mm anti-aircraft guns. The system is served by four people. It has seen upgrades since it's introduction to increase it effective tracking and engagement ranges, with the most recent being capable of integrating with the Luftvernmissil 17 and newer versions of the Radarensystem 2235.