The RS81B is a single rack space Phase Lock Loop digital AM/FM Tuner designed and built for professional applications such as remote radio station trucks and repeaters, church and school installations, as well as night clubs and restaurants. Remote has a 225mAh CR2032 lithium batteryMain Features:Up to 30 FM and AM stations may be stored.RDS ( Radio Data System) Display.Retains presets when power is off.Large LCD digital display.Auto Search function.Standard 1 space EIA rack chassis.3.5mm Headphone output, XLR outputs.Signal strenth LED meter indicator.Remote included W/225mAh CR2032 lithium batterySpecifications:Tuning Range: 87.5-108MHz3 dB Limiting: 12dBImage Rejection: 53dBUsable sensitivity mono IHF: 9dBSelectivity: (-70KHz : +90KHz)S/N Ratio at 1 mV Mono: 52dBStereo: 50dBTHD at 1 mV 40 kHz deviation: 0.18%Stereo Separation: 28dBAuto Scan Sensitivity: 23dBAM Suppression Mod: 52dBAntenna Input Impedance: 75 OhmsTuning Range: 530 – 1710 kHz (10 kHz increm.)522 – 1611 kHz (9 kHz increm.)IF Frequency: 450KHzUsable Sensitivity: 28dBAuto Scan Sensitivity: 41dBS/N Ratio at 5 mV/M: 46dB6 dB Bandwidth: 7KHzImage Rejection: 42dBA.C.A. +/- 9 kHz: 46dBAGC Action: 43dBTHD at 5mV/M: 0.40%Antenna Input Impedance: 300 OhmsSize: 19 x 1.75 x 7Weight: 7.1 lbs. (3.2 kg)