1 - 1
SECTION 1
SPECIFICATIONS
‘
‘
GENERAL
• Frequency coverage
: 156.025–157.425 MHz (Tx)
156.050–163.275 MHz (Rx)
• Mode
: 16K0G3E (FM)
16K0G2B (DSC)
• Usable channels
: All USA, international and Canadian channels
plus 10 weather channels
• Power supply requirement
: 13.8 V DC ±10 %
(negative ground)
• Usable 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 (Max.)
Receive
max. audio
1.5 A (Max.)
• Antenna impedance
: 50
Ω
(nominal)
• Input impedance (MIC)
: 2 k
Ω
• Output impedance (Audio)
: 4
Ω
• Dimensions (projections not included)
: 153(W)
×
67(H)
×
132(D) mm; 6(W)
×
2
5
⁄
8
(H)
×
5
3
⁄
16
(D) in
• Weight
: Approx. 825 g; 1 lb 13 oz
‘
‘
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 tolerance
: ±10 ppm
• Spurious emissions
: –70 dBc (High power)
–56 dBc (Low power)
• Adjacent channel power
: 70 dB
• Residual modulation
: 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 2500 Hz
‘
‘
RECEIVER
• Receive system
: Double conversion superheterodyne system
• Intermediate frequencies
: 1st
21.7 MHz
2nd
450 kHz
• Sensitivity
: 0.22 µV at 12 dB SINAD
• Squelch sensitivity
: Less than 0.22 µV
• Adjacent channel selectivity
: More than 70 dB
• Spurious response
: More than70 dB
• Intermodulation rejection ratio
: More than70 dB
• Hum and noise
: More than40 dB
• Audio output power (at 13.8 V DC)
: 4.5 W typical
at 10% distortion with an 4
Ω
load
• Audio frequency response
: +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.
Summary of Contents for IC-M302
Page 1: ...SERVICE MANUAL VHF MARINE TRANSCEIVER M302 ...
Page 29: ... BOTTOM VIEW DS4 DS5 DS7 DS6 DS2 DS3 9 4 ...
Page 30: ...J 1 R 1 1 5 HVS VOL1 VOL2 GND HV J1 to the MAIN unit W1 9 3 VR BOARD TOP VIEW BOTTOM VIEW 9 5 ...
Page 31: ...J 1 R 1 1 3 SQLI SQLV GND J1 to the MAIN unit W1 9 4 SQL BOARD TOP VIEW BOTTOM VIEW 9 6 ...
Page 32: ...9 7 R1 R3 R2 S2 S3 S4 R4 9 5 HM 141 TOP VIEW ...
Page 33: ...9 8 BOTTOM VIEW C1 S1 ...
Page 40: ......
Page 41: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14011IZ C1 2003 Icom Inc ...