Pz.Kpfw. IV Ausf.F2 / G Early - 7.5 cm KwK 40 L/43 gun
Pz.Kpfw. IV Ausf.G Late / H / J - 7.5 cm KwK 40/L48 gun (longer)
Panzerkampfwagen IV Ausf.J (Pz.Kpfw. IV Ausf.J) - Sonderkraftfahrzeug 161/2 (Sd.Kfz.161/2)
Panzerbeobachtungswagen IV Ausf.J (Pz.Beob.Wg.IV Ausf.J)- artillery spotter tank with special radio equipment. 133 converted from Ausf. J
Ausf.J is last version of Panzer IV, was greatly simplified to speed up production to replace heavy front line losses. The electric generator that powered the tank's turret traverse was removed, so the turret had to be rotated manually.
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