According to information from Ukrainian soldiers, Russian forces can jam satellite guidance ammunition such as Excalibur artillery shells and HIMARS systems. Russia has deployed in Ukraine the R-330Zh Zhitel in Ukraine, capable of detecting, tracking, and jamming the Inmarsat and Iridium satellite communications and GSM-1900 cellphones and also acting against GPS navigation systems utilizing the NAVSTAR satellites. Read full Defense News at this link ...
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Three Russian Electronic Warfare Systems, the R-330Zh Zhitel, Krasukha-4, and the Tirada-2, can jam GPS-guided ammunition. (Picture source Russian MoD and Social Networks)
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