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SECTION 1
SPECIFICATIONS
M
GENERAL
• Frequency coverage
: TX
RX
156.025–157.425 MHz
156.050–163.275 MHz
• Type of emission
: 16K0G3E, 16K0G2B (DSC)
• Antenna impedance
: 50
Ω
(Nominal)
• Operating temperature range
: –4˚F to +140˚F
• Power supply requirement
: 13.8 V DC ±15% (negative ground)
• Current drain (At 13.8 V DC ; approx.)
: Receiving
Transmitting
1.5 A (at max. audio)
5.5 A (at 25 W)
• Dimensions (Projections not included)
: 6
15
/
32
(W)
×
3
1
⁄
16
(H)
×
5
15
⁄
32
(D) in.
• Weight (Approx.)
: 2 Ib 5
3
⁄
4
oz.
M
TRANSMITTER
• Output power (At 13.8 V DC)
: 25 W (High)/1 W (Low)
• Modulation
: Variable reactance frequency modulation
• Maximum frequency deviation
: ±5.0 kHz
• Frequency error
: Less than ±10 ppm
• Spurious emissions
: Less than 70 dBc
• Adjacent channel power
: More than 70 dB
• Audio harmonic distortion
: Less than 10% (at 60% deviation)
• Residual modulation
: More than 40 dB
• Audio frequency response
: +1 dB to –3 dB of 6 dB oct. from 300 Hz to 2500 Hz
• Microphone impedance
: 2 k
Ω
M
RECEIVER
• Receive system
: Double conversion superheterodyne system
• Intermediate frequencies
: 1st IF: 21.7 MHz, 2nd IF: 450 kHz
• Sensitivity
: –13 dBµ typical at 12 dB SINAD
• Squelch sensitivity (At threshold)
: Less than –13 dBµ
• Adjacent channel selectivity
: More than 70 dB
• Spurious response
: More than 70 dB
• Intermodulation rejection ratio
: More than 70 dB
• Hum and Noise
: More than 40 dB
• Audio frequency response
: +1 dB to –3 dB of 6 dB oct. from 300 Hz to 3000 Hz
• Audio output power
: 4.5 W typical at 10% distortion with a 4
Ω
load
• Output impedance (Audio)
: 4
Ω
Specifications are measured in accordance with TIA/EIA 603
All stated specifications are subject to change without notice or obligation.
Summary of Contents for IC-M422
Page 1: ...3 26 5 6 2 42 3 6 2 iC m422 ...
Page 6: ...2 1 SECTION 2 INSIDE VIEWS FRONT UNIT MAIN UNIT ...
Page 23: ...7 2 IC M422 sm indd 9 10 4 21 2005 1 01 32 PM ...
Page 24: ...8 1 SECTION 8 SEMICONDUCTOR INFORMATION TRANSISTOR AND FET S DIODES ...
Page 29: ...10 1 SECTION 10 BLOCK DIAGRAM IC M422 sm indd 21 22 4 21 2005 1 01 39 PM ...
Page 32: ...11 3 11 2 LOGIC BOARD IC M422 sm indd 27 28 4 21 2005 1 01 44 PM ...
Page 35: ...S 14131MZ C1 2005 Icom Inc ...