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59Uniden MHS550 Radio Owner’s Manual
Specications (cont.)
Receiver
Items Unit Nominal Limit
(MRN) ȝV 0.3 0.4 max
(FRS) ȝV 0.35 0.5 max.
(FM Broadcast) ȝV 1.0 3.0 max.
(Air) ȝV 1.0 30 max.
Sensitivity for 12dB SINAD
(AM Broadcast) ȝV 1.0 2.0 max.
Squelch Sensitivity Threshold ȝV 0.1 0.25 max.
Tight ȝV 0.7 2.0 max.
CTCSS/DCS Opening SINAD (FRS) dB 8 12 max.
Audio Freq. Response 1kHz Ref.
(MRN) @ 500Hz
dB 6 3 to 7
(MRN) @ 2000Hz dB -6 -9 to -5
(FRS) @ 500Hz dB 6 3 to 7
(FRS) @ 2000Hz dB -6 -9 to -5
(MRN ±25kHz) dB 72 60 min. Adjacent Channel Selectivity
(FRS ±12.5kHz) dB 40 30 min.
IM Rejection(MRN) dB 63 55 min.
Image and Spurious Rejection (MRN) dB 75 50 min.
Conducted Spurious Emission
at the antenna terminal
dBm -65 -57 max.
(MRN) dB 50 35 min.
(FRS) dB 37 32 min
(AM Broadcast) dB 42 32 min.
(FM Broadcast) dB 53 32 min.
Hum and Noise Ratio
(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 min.
Oscillator 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.