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Nizhny Novgorod Research Institute of Radio Engineering

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Title: Nizhny Novgorod Research Institute of Radio Engineering  
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Nizhny Novgorod Research Institute of Radio Engineering

55Zh6M Nebo-M mobile multiband radar system, developed by NNIIRT

The Nizhny Novgorod Research Institute of Radio Engineering (NNIIRT) is a Russian electronics company specializing in the development and manufacture of radar equipment. Founded in 1947, it is based in the city of Nizhny Novgorod.[1]

Beginning in 1975, NNIIRT developed the first '3D' VHF radar capable of measuring height, range, and azimuth to a target. This effort produced the 55Zh6 'Nebo' VHF surveillance radar, which passed acceptance trials in 1982.[2]

In the post-Cold War era, NNIIRT developed the 55Zh6 Nebo U 'Tall Rack' radar, which has been integrated with the SA-21 anti-aircraft weapons system. This system is deployed around Moscow.[3]

In 2013, NNIIRT announced the further development of the 55Zh6UME Nebo-UME, which combines VHF and L band radars on a single assembly.[4]


  1. ^ "Nizhniy Novgorod Scientific Research Institute for Radio Engineering". Aviation Week. 
  2. ^ A. Zachepitsky (June 2000). "VHF (Metric Band) Radars from Nizhny Novgorod Research Radiotechnical Institute". Aerospace and Electronic Systems Magazine (IEEE): 9–14. 
  3. ^ Carlo Kopp (April 2010). "Evolving technological strategy in advanced air defense systems". Joint Force Quarterly. 
  4. ^ Miroslav Gyürösi (14 October 2013). "NNIIRT develops new dual-frequency early warning radar". Jane's Information Group. 

External links

  • - Website (Russian language)
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