The squadron was re-established at RAAF Station Mallala, South Australia, on 1 March 1948, when No. 2 (Communications) Squadron was renamed No. 34 (Communications) Squadron. It operated as a VIP transport, courier and reconnaissance unit, primarily in support of the Woomera rocket range, focal point of the Anglo-Australian Long Range Weapons Project during the Cold War. No. 34 (Communications) Squadron flew the only Vickers Viking to be taken on strength by the RAAF, and was also the only RAAF squadron to operate the Bristol Freighter. Three Freighters were taken on strength in April and May 1949, and a fourth in September 1951; one was lost with all three crew members in a crash near Mallala on 25 November 1953 after its wing failed in flight. The squadron also operated Percival Prince, Auster, Dakota and Anson aircraft, undertaking regular transport duties and disaster relief along with its Woomera support work before disbanding at Mallala on 28 October 1955.