Became Operational:  1940
War Status:  Used on CL Molotov
Purpose:  Air Warning
Wavelength:  4 meters
Power Output:  50 KW
Range:  64.8 nm
Remarks:  First Soviet ship-based radar system.  Modification of the RUS-2 land radar.

Became Operational:  1944
War Status:  Not accepted for production.
Purpose:  Air Warning
Wavelength:  1.4 meters
Power Output:  80 KW
Range:  25 nm
Remarks:  First in the series of Gyuis air detection radars used on Soviet ships after World War II.  The prototype was trialed on the destroyer Gromkii and used on it until the end of the war. 

Became Operational:  1944
War Status:  Installed on several destroyers
Purpose:  Air Warning
Wavelength:  1.4 meters
Power Output:  80 KW
Range:  25 nm
Remarks:  Used until the end of the war, but not accepted into production.

Became Operational:  1945
War Status:  Used on Pr. 30K destroyers after the war
Purpose:  Air Warning
Wavelength:  N/A
Power Output:  N/A
Range:  about 16 nm air / about 6.5 nm surface 
Remarks:  Trialed on destroyer Strogyi at the end of 1944.

Became Operational:  1945-6
War Status:  Used on many post war Soviet warships
Purpose:  Air and Surface Search
Wavelength:  N/A
Power Output:  N/A
Range:  28.6 against aircraft / 10.25 Surface
Remarks:  Tested on the DD Ognevoy in Oct-Nov 1945.

Became Operational:  1945-6
War Status:  Used on many post war Soviet warships
Purpose:  Cruiser Main Caliber Fire-Control
Wavelength:  N/A
Power Output:  N/A
Range:  9.75 nm
Remarks:  Developed in 1945.  Tested in July-August 1945 on the Cruiser Molotov.  Test went satisfactory and the system was accepted in service as Redan-1.

Became Operational:  1945-6
War Status:  Used on many post war Soviet warships
Purpose:  Destroyer Main Caliber Fire-Control
Wavelength:  N/A
Power Output:  N/A
Range:  9.75 nm
Remarks:  Developed in 1945 simultaneously with Mars-1.  Tested in 1945 on the DD Ognevoy.  Test went satisfactory and the system was accepted in service as Redan-2.

Became Operational:  1945-6
War Status:  Used on many post war Soviet warships
Purpose: Anti-Aircraft Fire-Control
Wavelength:  N/A
Power Output:  N/A
Range:  about 6.5 nm
Remarks:  Used on Pr. 30K destroyers

Most of the radars used by the Soviet Navy during World War II were from Lend-Lease.  The first Lend-Lease radars started to arrive in the USSR in 1942 and by the end of the war most of the large warships were equipped by some sort of radar.

Became Operational:  First fitted to corvette HMS Orchis in May 1941.
War Status:  Used operationally on small ships
Purpose:  Surface Warning
Wavelength:  10 cm
Power Output:  5 - 90 KW
Range:  10 - 25 nm
Remarks:  First microwave radar set.  Very successful and fitted to hundreds of ships.
Soviet Use:  In the Soviet Union used on board Lend-Lease Destroyers.

Became Operational:  December 1940
War Status:  Most widely used set in World War II
Purpose:  Air-warning
Wavelength:  3.5 meters
Power Output:  350 KW
Range:  120 nm
Remarks:  First used on light cruiser HMS Dido.
Soviet Use:  Used on most of the Battleships and Cruisers.

Became Operational:  1941
War Status:  Operational
Purpose:  Close range AA control
Wavelength:  50 cm
Power Output:  25 KW
Range:  3.5 nm
Remarks:  First used on HMS Prince of Wales.
Soviet Use:  Used on the light cruisers of Kirov and Maxim Gorky classes.

Became Operational:  June 1940
War Status:  Operational
Purpose:  Main gunnery for large ships
Wavelength:  50 cm
Power Output:  25 KW
Range:  10
Remarks:  First fitted to HMS Nelson.  Very successful.
Soviet Use:  Used on board some cruisers and destroyers.

Became Operational:  Late 1942
War Status:  Operational
Purpose:  Long range AA gunnery
Wavelength:  50 cm
Power Output:  25 KW
Range:  8.5 nm
Remarks:  Variant of Type 284 adapted for small ships.
Soviet Use:  Used on board some of the Kirov and Maxim Gorky class light cruisers

Became Operational: 1941
War Status:  Operational
Purpose:   Air and surface search
Wavelength:  140 cm
Power Output:  100 KW (10 kW for 286M)
Range:  20 nm
Remarks: 
Soviet Use:  Used on board some of the Soviet and Lend-Lease destroyers as well as submarine L-15 and the patrol ship Smerch.

Became Operational:  End of 1941
War Status:  Operational
Purpose:  Air warning
Wavelength:  1.5 meters
Power Output:  100 KW
Range:  35 nm
Remarks:  Widely used on small ships throughout World War II.
Soviet Use:  Most widely used radar in the Soviet Navy.  Used on most of the destroyers and patrol ships as well as some gunboats and Lend-Lease submarines.

Became Operational:  1941
War Status:  Operational
Purpose:  Surface Search
Wavelength:  10 cm
Power Output:  70 KW
Range:  15.7 nm
Soviet Use:  Used on the Pacific Fleet Maxim Gorky class light cruisers and on Lend-Lease light cruiser Murmansk (ex-USS Milwaukee CL-5).

Became Operational:  1942
War Status:  Operational
Purpose:  Surface Search
Wavelength:  10 cm
Power Output:  150 KW
Range:  16 nm
Soviet Use:  Used on Leningrad and Baku class DLs and large subchasers of BO-2 class received through Lend-Lease.

Became Operational:  1942
War Status:  Operational
Purpose:  Surface Search
Wavelength:  10 cm
Power Output:  250 KW
Range:  21 nm
Soviet Use:  Used on some minesweepers.

Became Operational:  1943
War Status:  Operational
Purpose:  Air/Surface Search
Wavelength:  10 cm
Power Output:  75-200 KW
Range:  16 nm Surface/ 35 nm Air
Soviet Use:  Used on most of the Lend-Lease MTBs and many of the small Soviet ships.

Became Operational:  1944
War Status:  Operational
Purpose:  Air Search
Wavelength:  150 cm
Power Output:  250 KW
Range:  162 nm
Soviet Use:  Used on Lend-Lease cruiser Murmansk.

Became Operational:  1941
War Status:  Operational
Purpose:  Main Caliber Fire Control
Wavelength:  41.7 to 44 cm
Power Output:  50 KW
Range:  43 nm
Soviet Use:  Used, but on which ships is unknown.