103.3. Receiving UnitReceive System Double Conversation Super Heterodyne1st 21.7MHzIntermediate Frequencies2nd 450kHzLocal Oscillation Frequency Receiving Frequency - 21.7MHzLocal Oscillation Mode SYNTHESIZER ModeSensitivity 32uV (20dB SINAD)0.22uV (12dB SINAD)Audio Frequency Response -6dB/octaveSquelch Sensitivity 0.22uVCo-Channel Rejection -10dB ~ 0dBAdjacent Channel Selectivity Over 70dBSpurious Response Rejection Ratio Over 70dBInter-modulation Rejection Ratio Over 68dBSpurious Emission Less than 2nW(-56.9dBm)Hum and Noise Less than -40dBAudio Output Power (at 13.6 V DC) 4.5W / 4Ω(Distortion Rate: Less 10%)3.4. Dedicated Receiving UnitOperating Frequency 156.525MHzMode 16K0G2BReceive System Double-Conversion Super HeterodyneIntermediate Frequencies 1st 10.70 MHz2nd 450 kHzInter-modulation Rejection Ratio Over 68dBAdjacent Channel Selectivity Over 70dBSpurious Response Rejection Ratio Over 70dBSpurious Emission Less than 2nW(-56.9dBm)DSC Modulation Speed 1200baud (±30ppm)DSC Modulation Mode FSKDSC Modulation Rate Within m=2±10%MARK Frequency Within 1300Hz±10HzSPACE Frequency Within 2100Hz±10HzMaximum Sensitivity Available Bit Error Rate: Less than 10 -2 in 0.25uvDSC Operation ITU-R M.541-9ITU-R M.689-2DSC Protocol ITU-R M.493-11 class-ADSC FILE Memory DISTRESS-Related Message Reception: 20OTHERS-Related Message Reception : 20