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- SJ_radar abstract "SJ radar was a type of S-band (10-cm) radar set used on American submarines during the Second World War. The widespread use of the SJ radar, combined with the very low use of radar in the Imperial Japanese Navy gave great operational flexibility to the United States Navy's submarine campaign in the Pacific Ocean.The first prototype SJ was deployed in December 1941, but it was mid-1942 before they became common equipment. SJ radar was on all submarines by early 1943. The SJ was the second type of radar deployed on submarines during the war, representing a substantial improvement over the previous SD radar. The SJ was a variant of the SG surface search radar used on surface warships, contained in sets capable of fitting through submarine hatches for installation and designed to lie close to the curved hulls.The SJ provided directional information, provided highly accurate distance information, and provided information about surface contacts as well as low-flying aircraft.The SJ radar was even used as a communications device. When used with a telegraph key, the SJ radar could send signals on a point-to-point basis between two submarines operating in a wolf pack. The directionality of the antenna and the short range provided relatively high security for this transmission.".
- SJ_radar wikiPageID "5607338".
- SJ_radar wikiPageRevisionID "593056652".
- SJ_radar hasPhotoCollection SJ_radar.
- SJ_radar subject Category:Sea_radars.
- SJ_radar subject Category:World_War_II_American_electronics.
- SJ_radar subject Category:World_War_II_radars.
- SJ_radar type Artifact100021939.
- SJ_radar type Device103183080.
- SJ_radar type Instrument103574816.
- SJ_radar type Instrumentality103575240.
- SJ_radar type MeasuringInstrument103733925.
- SJ_radar type Object100002684.
- SJ_radar type PhysicalEntity100001930.
- SJ_radar type Radar104039848.
- SJ_radar type SeaRadars.
- SJ_radar type Whole100003553.
- SJ_radar type WorldWarIIRadars.
- SJ_radar comment "SJ radar was a type of S-band (10-cm) radar set used on American submarines during the Second World War. The widespread use of the SJ radar, combined with the very low use of radar in the Imperial Japanese Navy gave great operational flexibility to the United States Navy's submarine campaign in the Pacific Ocean.The first prototype SJ was deployed in December 1941, but it was mid-1942 before they became common equipment. SJ radar was on all submarines by early 1943.".
- SJ_radar label "SJ radar".
- SJ_radar sameAs m.0dv_84.
- SJ_radar sameAs Q7390569.
- SJ_radar sameAs Q7390569.
- SJ_radar sameAs SJ_radar.
- SJ_radar wasDerivedFrom SJ_radar?oldid=593056652.
- SJ_radar isPrimaryTopicOf SJ_radar.