Old Russian radar systems are being kept in service through a modernisation programme by MOD Arzenal Electromechanical of Budapest (Stand E340).
Radars are being equipped with new digital receiving and signal processing systems to enable them to remain in service with the Hungarian army. The P-37, P-18 and PRV-17 radars have been modernised while limited height finding capability has been developed on the P-37.
Source: Flight Daily News