175th Radio Research Bien Hoa RVN

The 175th Radio Research Company (RRC), stationed at Bien Hoa, Republic of Vietnam (RVN), was a U.S. Army signals intelligence unit active during the Vietnam War. Established in the mid-1960s, the 175th RRC’s primary mission was to conduct electronic surveillance and intercept enemy communications in support of American and allied operations. The unit operated sophisticated radio intercept and direction-finding equipment, playing a crucial role in providing actionable intelligence on Viet Cong and North Vietnamese Army activities. Throughout its deployment, the 175th RRC contributed significantly to the success of numerous operations in the III Corps Tactical Zone before its drawdown in the early 1970s.