48■ Options• MBF-5 flush mount kitTo mount the transceiver to a panel.• HM-237B microphone• MA-500TR class b ais transponderTo transmit individual DSC calls to a selected AIS targets.SPECIFICATIONS AND OPTIONS10■ SpecificationsL All stated specifications are subject to change without notice or obligation.GeneralFrequency coverage TX: 156.025 ~ 157.425 MHzRX: 156.050 ~ 163.275 MHzCH70: 156.525 MHzMode 16K0G3E (FM), 16K0G2B (DSC)Channel spacing 25 kHzOperating temperature range –20°C ~ +60°C, –4ºF ~ +140ºFCurrent drain (at 13.8 V) TX high (25 W): Less than 5 AMaximum audio: Less than 1.2 APower supply requirement Negative ground: 13.8 V DC (11.7 ~ 15.9 V)Frequency tolerance ±5 ppmAntenna impedance 50 Ω nominalDimensions(approximately,projections not included)156.5 (W) × 66.5 (H) × 110.1 (D) mm6.2 (W) × 2.6 (H) × 4.3 (D) inWeight (approximately) 700 g, 1.5 lb (including microphone)TransmitterOutput power 25 W or 1 WModulation system FSK ModulationMaximum frequency deviation ±5 kHzSpurious emissions Less than –60 dBcReceiverReceive system Direct conversion systemSensitivity FM: 0.22 μV (typical) at 12 dB SINADDSC (CH70): –5 dBμ emf (typical) (1% BER)Squelch sensitivity Less than 0.32 μVIntermodulation rejection ratio FM: More than 63 dBDSC (CH70): More than 55 dBμ emf (1% BER)Adjacent channel selectivity FM: More than 68 dBDSC (CH70): More than 68 dBμ emf (1% BER)Audio output power(at 10% distortion into a 4 Ω load)Internal: More than 2 WExternal: Typical 4.5 WGPS (For only the IC-M220G)Frequency 1575.42 MHzChannel Acquisition, tracking: Maximum 24 chCalculation: Maximum 12 chDeferential satellites WAAS, EGNOS, MSAS, GAGANGLONAS receiving frequency 1598.0625 MHz ~ 1605.375 MHz25.8(1)84.3 (3.3)62.4 (2.5)137 (5.4)51 (2)66.5 (2.6)156.5 (6.2)unit: mm (inch)