User Manual

91
■ Specifications
D General
• Frequency coverage:
Tx IC-M423/IC-M423G 156.000–161.450 MHz
IC-M424/IC-M424G 156.025–157.425 MHz
IC-M423 (CHN/AUS version) 156.025–157.425 MHz
Rx IC-M423/IC-M423G 156.000–163.425 MHz
IC-M424/IC-M424G 156.050–163.275 MHz
IC-M423 (AUS version) 156.050–163.275 MHz
IC-M423 (CHN version) 156.050–162.025 MHz
CH70 156.525 MHz
• Mode: 16K0G3E (FM)
16K0G2B (DSC)
• Channel spacing: 25 kHz
• Operating temperature range: –20°C to +60°C;
–4ºF to +140ºF
• Current drain (at 13.8 V):
TX high 5.5 A maximum
Maximum audio 5.0 A maximum
• Power requirement:
(negative ground) 13.8 V DC nominal
• Frequency stability: ±1.5 kHz (–20°C to +60°C;
–4°F to +140°F)
• Antenna impedance: 50 Ω nominal
• Dimensions (approximately): 180(W) × 82(H) × 119.9(D) mm
; 7.1(W) × 3.2(H) × 4.7(D) inches
(Projections not included)
• Weight (approximately): 1.2 kg; 2.6 lb
D Transmitter
• Output power: 25 W/1 W
• Modulation system: Variable reactance frequency
modulation
• Maximum frequency deviation: ±5.0 kHz
• Spurious emissions:
IC-M423/IC-M423G Less than 0.25 µW
IC-M424/IC-M424G Less than –70 dBc (high)
Less than –56 dBc (low)
IC-M423 (CHN/AUS version) Less than –70 dBc (high)
Less than –56 dBc (low)
D Receiver
• Receive system: Double conversion superheterodyne
• Sensitivity:
FM IC-M423/IC-M423G –5 dBµ emf typical (at 20 dB SINAD)
IC-M424/IC-M424G –13 dBµ typical (at 12 dB SINAD)
IC-M423
(CHN/AUS version) –13 dBµ typical (at 12 dB SINAD)
DSC IC-M423/IC-M423G –4 dBµ emf typical (1% BER)
IC-M424/IC-M424G –5 dBµ emf typical (1% BER)
IC-M423
(CHN/AUS version) –5 dBµ emf typical (1% BER)
• Squelch sensitivity:
IC-M423/IC-M423G Less than –2 dBµ emf
IC-M424/IC-M424G Less than –10 dBµ
IC-M423 (CHN/AUS version) Less than –10 dBµ
• Intermodulation rejection ratio:
FM IC-M423/IC-M423G More than 68 dB
IC-M424/IC-M424G More than 70 dB
IC-M423
(CHN/AUS version) More than 70 dB
DSC More than 68 dBµ emf (1% BER)
+ Continued on the next page.
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SPECIFICATIONS AND OPTIONS
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All stated specifications are subject to change without notice or obligation.