IC-M45 - Specifications This information is taken directly off of the ICOM IC-M45 brochure.   General Frequency Range: Transmit: 156.025 -157.425 MHz; Receive: 156.025 - 163.275 MHz Usable channels: All U.S.A., International and Canadian channels; plus 10 weather channels Mode: FM(16K0G3E) Power Supply: 13.8 V DC +/-15% Current Drain (at 13.8 V DC): Transmit: Less than 6 A Receive: 1.2 A (max. audio) Usable Temperature Range: -20°C to +60°C (-4°F to +140°F) Antenna connector: 50 ohms (SO-239) Weight: 0.9 kg; 2 lb   Transmitter Output Power (at 13.8 V): 25 W (high); 1 W (low) Modulation System: Variable reactance phase modulation Spurious Emissions: Less than -70 dB Adj. Channel Power: 60 dB   Receiver Receiver System: Double-conversion superheterodyne Intermediate Frequencies: 1st: 30.85 MHz; 2nd: 450 kHz Sensitivity: 0.22µV for 12 dB SINAD (typical) Squelch sensitivity: 0.22 µV typical Adjacent channel selectivity: 70 dB typical Spurious Response Rejection Ratio: 70 dB typical Intermodulation rejection ratio: 70 dB typical Audio Output Power (at 13.8 V DC, 10% distortion): 4.0 W typical with a 4 ohms load Audio Output Impedance: 4 ohms   Options SP-5 EXTERNAL SPEAKER: A large, external speaker for superior audio output. SP-10 EXTERNAL SPEAKER: A compact, external speaker. Features easy installation. MB-69 FLUSH MOUNT: For mounting the IC-M45 to a panel. HM-177B/W HAND MICROPHONE: Same as supplied. White or black.