Uniden MHS550 Radio Owner’s Manual40Receiver SpecificationsUnit Nominal LimitSensitivity for 12dBSINADMRN μV 0.3 0.4 max.FRS μV 0.35 0.5 max.FM Broadcast μV 1.0 3.0 max.Air μV 1.0 30 max.AM Broadcast μV 1.0 2.0 max.Squelch Sensitivity Threshold μV 0.1 0.25 max.Tight μV 0.7 2.0 max.CTCSS/DSC OpeningSINAD FRS dB 8 12 max.Audio Freq. Response1kHz Ref.MRN @ 500 Hz dB 6 3 to 7MRN @ 2000 Hz dB -6 -9 to -5FRS @ 500 Hz dB 6 3 to 7FRS @ 2000 Hz dB -6 -9 to -5Adjacent ChannelSelectivityMRN ±25 kHz dB 72 60 min.FRS ±12.5 kHz dB 40 30 min.IM Rejection MRN dB 63 55 min.Image and SupuriousRejection MRN 75 50 min.Conducted Spurious Emission at theAntenna Terminal dBm -65 -57 max.Hum and Noise RatioMRN dB 50 35 min.FRS dB 37 32 min.AM Broadcast dB 42 32 min.FM Broadcast dB 53 32 min.Air dB 42 32 min.THD @ Standard Output Power (MRN) % 1.2 10 max.Audio Output Power @10% THD (MRN) W 0.45 0.3 minOscillator Dropout Voltage (MRN) V 2.9 3.8 max.Current Drain @ No Signal (MRN) mA 72 85 max.Current Drain @ Maximum Output (MRN) mA 220 250 max.
