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Last modified 2024-09-17

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Icom IC-M31

A picture of Icom IC-M31

SPECIFICATIONS

GENERAL
Type:Marine VHF transceiver
Frequency range: TX: 156.025-157.425 MHz
RX: 156.050-162.025 MHz
Tuning steps:Channelized
Frequency stability:±1.5 KHz @ -15 to +55°C (5 to 131°F)
Mode:FM
Channels / memory management: All international channels
All US channels (UK version only)
1 call
Duplex shift / offset:Automatic according to bandplan
Power supply:7-9 VDC (Battery pack)
Current drain / power consumption:RX: 20-200 mA
TX: 0.7-1.5 A
Antenna impedance / connector:50 ohm / ?
Dimensions (W*H*D):61*135*41 mm (2.4*5.32*1.61")
Weight:360 g (12.7 oz), with BP-224
Other features:Channel 16 button. Dual/triwatch. Scanning.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: ? MHz
2nd IF: ? KHz
Sensitivity:0.8 uV (20 dB SINAD)
Selectivity:70 dB (Adjacent channel)
Image rejection:
AF output power / speaker:200 mW at 10% distortion / 8 ohm
External speaker connector:




TRANSMITTER SECTION
RF output power: High: 5 W
Low: 1 W
Modulation system:Variable reactance frequency modulation
Max FM deviation (Factory set):±5 KHz
Spurious emissions:Less than 0.25 uW
Microphone impedance / connector:? ohm / Internal only
Microphone input level:-




MISCELLANEOUS
Manufactured:Japan, 2003-200x (Discontinued)
Additional info:
Related documents:User manual (1.4 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
AD-103
BC-119N
BC-121N
BC-145
BC-147
BC-150
BC-157
BC-162
BP-223
BP-224
BP-252
CP-17L
MB-68
MB-74N
MB-87
OPC-515L
OPC-656
Charger adapter
Desktop charger
Multicharger
AC adapter
AC adapter
Desktop charger
AC adapter
Desktop charger
Battery case (Six LR6/AA alkaline batteries)
NiCd battery pack. 7.2 V, 750 mAh
Li-Ion battery pack. 7.4 V, 950-980 mAh
Cigarette lighter cable (For BC-119N)
Belt clip
Exclusive alligator-type belt clip
Swivel belt clip
DC power cable (For BC-119N)
DC power cable (For BC-121N)