Which RADIAC device has a backup power supply of 4 Ni-Cad batteries?

The AN/PDR-65 is a portable radiation detection device used by the Navy, known for its versatility and effectiveness in measuring gamma radiation. One of its key features is the presence of a backup power supply that consists of four nickel-cadmium (Ni-Cad) batteries. This backup system is essential for maintaining functionality in situations where primary power sources may fail or be absent, ensuring the continued capability to monitor radiation levels effectively.

The AN/PDR-65's design and battery configuration contribute to its operational readiness, allowing personnel to perform critical tasks related to radiation safety without interruption. This adaptability makes it an important tool for damage control teams in the Navy, as they must be prepared for various scenarios in environments where radiation may be present.