Military, law enforcement and surveillance operators are discovering the ability to see and hear more with the SR2000A and AR8200MkIII from AOR. The SR2000A is an ultra-fast spectrum display monitor that uses the power of FFT (Fast Fourier Transform) algorithms with a sensitive receiver covering 25MHz to 3GHz continuous, and a 5 inch TFT FULL color LCD monitor that displays up to 40MHz spectrum bandwidth, a switchable time-lapse “waterfall” display or live video in NTSC or PAL formats. The AR8200MkIII portable receiver features 1,000 alphanumeric memory channels, coverage from 500 KhZ TO 3GhZ and a TXCO that delivers solid frequency stability and performance not found in most desktop units. Improved RF circuits combine for greater sensitivity, resistance to intermod and enhanced Signal to Noise ratio. Optional internal slot cards include Memory Expansion (up to 4,000 memories), CTCSS Squelch and Search, and Tone Eliminator. A special government only version, AR8200 MKIII IR, features selectable infra-red illumination (IR) of the display and operating keys for operation by users wearing night vision apparatus without removing goggles and waiting for the eyes to re-adjust.