Icom IC-M604A Service Manual - Page 4

SECTION 1 SPECIFICATIONS ¤ GENERAL • Frequency coverage • Mode • Power supply voltage • Operating temperature range • Current drain (at 13.8 V DC) • Antenna impedance • Dimensions (projections not included) • Weight : 156.025-157.425 MHz (TX) 156.050-163.275 MHz (RX) : 16K0G3E (FM) / 16K0G2B (DSC) : 13.8 V DC ±15 % (negative ground) : -20˚C to +60˚C; -4˚F to +140˚F : Transmit Receive at 25 W 5.5 A approx. max. audio 1.5 A approx. : 50 Ω (nominal) : 220(W)×110(H)×109.4(D) mm; 821⁄32(W) × 411⁄32(H) × 45⁄16(D) in : 1400 g; 3.09 lb ¤ TRANSMITTER • Output power (at 13.8 V DC) • Modulation • Maximum frequency deviation • Frequency stability • Spurious emissions • Adjacent channel power • Residual modulation • Audio harmonic distortion • Audio frequency response • Microphone impedance : High Low 25 W 1 W : Variable reactance frequency modulation : ±5.0 kHz : ±0.3 kHz : Less than -70 dBc : More than 70 dB : More than 40 dB : Less than 10% at 60% deviation : +1 dB to -3 dB of 6 dB/octave from 300 Hz to 3000 Hz : 2 kΩ ¤ RECEIVER • Receive system • Intermediate frequencies • Sensitivity • Squelch sensitivity • Adjacent channel selectivity • Spurious response • Intermodulation rejection ratio • Hum and noise • Audio output power (at 13.8 V DC) • Audio frequency responce *1Channel 70, *2Normal channels : Double conversion superheterodyne system : 1st 2nd 21.7 MHz*1, 30.15 MHz*2 450 kHz : Less than -10 dBµ at 12 dB SINAD (for both regular and CH70) : Less than -10 dBµ at threshold : More than 80 dB : More than 80 dB : More than 80 dB : More than 40 dB : 5.0 W typical at 10% distortion with a 4 Ω load : +1 dB to -3 dB of -6 dB octave from 300 Hz to 3000 Hz Specifications are measured in accordance with TIA/EIA 603 All stated specifications are subject to change without notice or obligation. 1 - 1