Icom IC-M604 - Specifications; General Specifications; Transmitter Specifications; Receiver Specifications

¤ GENERAL
• Frequency coverage : 156.025–157.425 MHz (TX)
156.050–163.275 MHz (RX)
• Mode : 16K0G3E (FM) / 16K0G2B (DSC)
• Power supply voltage : 13.8 V DC ±15 % (negative ground)
• Operating temperature range : –20˚C to +60˚C; –4˚F to +140˚F
• Current drain (at 13.8 V DC) : Transmit at 25 W 5.5 A approx.
Receive max. audio 1.5 A approx.
• Antenna impedance : 50 Ω (nominal)
• Dimensions (projections not included) : 220(W)×110(H)×109.4(D) mm; 8
21
⁄32(W) × 4
11
⁄32(H) × 4
5
⁄16(D) in
• Weight : 1400 g; 3.09 lb
¤ TRANSMITTER
• Output power (at 13.8 V DC) : High 25 W
Low 1 W
• Modulation : Variable reactance frequency modulation
• Maximum frequency deviation : ±5.0 kHz
• Frequency stability : ±0.3 kHz
• Spurious emissions : Less than –70 dBc
• Adjacent channel power : More than 70 dB
• Residual modulation : More than 40 dB
• Audio harmonic distortion : Less than 10% at 60% deviation
• Audio frequency response : +1 dB to –3 dB of 6 dB/octave from 300 Hz to 3000 Hz
• Microphone impedance : 2 kΩ
¤ RECEIVER
• Receive system : Double conversion superheterodyne system
• Intermediate frequencies : 1st 21.7 MHz*
1
, 30.15 MHz*
2
2nd 450 kHz
• Sensitivity : Less than –10 dBµ at 12 dB SINAD (for both regular and CH70)
• Squelch sensitivity : Less than –10 dBµ at threshold
• Adjacent channel selectivity : More than 80 dB
• Spurious response : More than 80 dB
• Intermodulation rejection ratio : More than 80 dB
• Hum and noise : More than 40 dB
• Audio output power (at 13.8 V DC) : 5.0 W typical at 10% distortion with a 4 Ω load
• Audio frequency responce : +1 dB to –3 dB of –6 dB octave from 300 Hz to 3000 Hz
*
1
Channel 70, *
2
Normal channels
Specifications are measured in accordance with TIA/EIA 603
All stated specifications are subject to change without notice or obligation.
SECTION 1 SPECIFICATIONS
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