Icom IC-M45 Service Manual - Section 1
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SECTION 1
SPECIFICATIONS
‘
‘
GENERAL
• Frequency coverage
: 156.025–157.425 MHz (Tx)
156.025–163.275 MHz (Rx)
• Mode
: 16K0G3E (FM)
• Usable channels
:
• Power supply requirement
: 13.8 V DC ±15% (negative ground)
• Usable temperature range
: –20˚C to +60˚C; –4˚F to +140˚F
• Frequency stability
: ±10 ppm (–20˚C to +60˚C; –4˚F to +140˚F)
• Current drain (at 13.8 V DC)
: Transmit
at 25 W
6.0 A
Receive
max. audio
1.2 A
• Antenna impedance
: 50
Ω
(nominal)
• Dimensions (projections not included)
: 152(W)
×
67(H)
×
144(D) mm; 6(W)
×
2
5
⁄
8
(H)
×
5
2
⁄
3
(D) in
• Weight
: 900 g; 2 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
• Spurious emissions
: 70 dB
• Adjacent channel power
: 60 dB
• Residual modulation
: 40 dB
• Audio harmonic distortion
: Less than 10% at 70% deviation
• Audio frequency response
: +1 dB to –3 dB of 6 dB octave from 300 Hz to 3000 Hz
‘
‘
RECEIVER
• Receive system
: Double conversion superheterodyne system
• Intermediate frequencies
: 1st
30.85 MHz
2nd
450 kHz
• Sensitivity
: 0.22 µV typical at 12 dB SINAD
• Squelch sensitivity
: 0.22 µV typical
• Adjacent channel selectivity
: 70 dB typical
• Spurious response
: 70 dB typical
• Intermodulation rejection ratio
: 70 dB typical
• Hum and noise
: 40 dB
• Audio output power (at 13.8 V DC)
: 4.0 W typical at 10% distortion with an 4
Ω
load
• Audio frequency responce
: +2 dB to –8 dB of –6 dB octave from 300 Hz to 3000 Hz
All stated specifications are subject to change without notice or obligation.
Channel
Model
INT
Version
USA CAN
WX
IC-M45
[USA]
[USA-1]
IC-M45EURO
[ITA]
[FRA]
fine