Security professionals and government agencies rely on the AR8200MkIII handheld receiver from AOR USA Inc. for its frequency coverage combined with stability from the TCXO, sensitivity and enhanced resistance to intermod. It offers audio frequency response and includes NiMH AA cells that can be charged while operating the receiver. It includes 1,000 alphanumeric memory channels, 2 VFOs, 40 search banks and all mode reception. Optional internal slot cards expand the capabilities. A special version, the AR8200 MKIII IR, is designed for law enforcement and surveillance as well as the military features infrared illumination (IR) of the display and operating keys. The IR illumination function is selectable, allowing operation by users wearing night vision apparatus without removing goggles and waiting for the eyes to re-adjust.