The AN/PRC-25 is a compact, lightweight, tactical VHF, solid state man pack radio set. Prototypes of this set were initially tested in 1959. After some modifications, initial distribution began in 1962. It is reported that more than 130,000 sets were produced.

The ANPRC-25 was the main 'Aussie' communication hardware in the field. Each platoon had a dedicated radio operator (Signaller). When the Battalion, during its first tour, arrived in Vietnam with not enough radio sets, it required some members to beg, borrow, or steal from American units.