Initially, only a few boats were issued primitive radar sets. U.S. Navy PTs were eventually fitted with Raytheon SO radar, which had about a range. Having radar gave Navy PTs a distinct advantage in intercepting enemy supply barges and ships at night. As more PTs were fitted with dependable radar, they developed superior night-fighting tactics and used them to locate and destroy many enemy targets. During the Guadalcanal and Solomon Island campaigns in 1942–1943, the PT boats of Squadrons (MTBRON) 2, 3, 5 and 6 would lie in wait to ambush a target from torpedo range, generally about .