US Army Vietnam PRC-10 Radio With EIS

The US Army Vietnam PRC-10 Radio with EIS is a portable field radio used extensively by the US military during the Vietnam War era. Designed for backpack use, the PRC-10 (Portable Radio Communications-10) operates in the VHF FM band, typically between 38.0 to 54.9 MHz, enabling effective short-to-medium range communication in combat conditions. This unit includes the EIS (Earphone, Insert, and Switch), which consists of an earphone and push-to-talk microphone assembly for discreet audio reception and transmission. The PRC-10 features a sturdy metal case, adjustable frequency selector, telescopic antenna, and external power supply options compatible with standard military batteries of its time. First introduced in the early 1950s, the PRC-10 was widely adopted throughout the Vietnam conflict for use at squad and platoon levels, playing a crucial role in field communication. Its design reflects Cold War-era technology, offering durability and reliability in challenging environments.