IC-M31

IC-M31
IC-M31 Waterproof VHF Marine Transceiver (Discontinued)

Icom is pleased to add a Lithium-Ion version of its best selling transceiver, the IC-M31 to its range of waterproof handheld radios. The introduction of the BP-241 1150mAh Li-Ion battery pack and the BC-162 single desktop rapid charger as standard accessories means that customers now have the opportunity of purchasing an Icom Lithium-Ion marine handheld at an unbeatable price.

This product is no longer available. If you are looking for a replacement, then please visit the IC-M35 Buoyant VHF Marine Transceiver product page.

BP-241 Lithium-Ion Battery Pack & BC-162 Rapid Charger As Standard
The IC-M31 Li-Ion version comes with the BP-241 Li-Ion battery pack and BC-162 desktop rapid charger as standard. Originally designed for the IC-M90E & IC-GM1600E these new accessories can be used with the IC-M31 providing you with the option of selling up a Lithium Ion battery solution to the thousands of IC-M31 owners in the market place.
Lithium-ion batteries allow flexible charging and have almost no memory effect. Please note that the BP-241 is not compatible with the IC-M21. Although the BP-241 can be attached, the radio will not operate correctly.

BC-162 Single Desktop Rapid Charger for Li-Ion & Ni-Cd Batteries
The BC-162 automatically distinguishes between various Icom batteries without the need for charger adapters. The BC-162 rapidly charges the following battery packs.

JIS Grade 7 Waterproof Protection
The IC-M31 has waterproof protection, equivalent to JIS waterproof specification grade 7 *. Equivalent to IPX7 of the corresponding international standard IEC 60529 (2001).
*1m depth for 30 minutes.

Easy to See LCD & Large Channel Indication
The IC-M31 has a large (32x16mm) easy to see LCD. The Volume and SQL levels are shown in the display, with LCD and key backlighting standard for night time operation.

Simple Operation
9 large buttons on the front panel provide user-friendly operation. The independent volume and channel buttons are located on the front panel for convenient one-hand operation.

IC-M31 Additional Features
• 2-step power saver function
• Set mode function allows you to set beep sound, auto backlight etc.
• Self check function checks internal temperature, battery voltage, water intrusion, etc
• Beep sound programmable for each button
• Battery power indicator

  • Tx: 156.000–161.450MHz
  • Rx: 156.000–163.425MHz
  • Type of emission: 16K0G3E (FM)
  • Current drain (at 7.5V DC) :
  • Tx at 5W output 1.5A typical
  • at 1W output 0.7A typical
  • at 0.5W output 0.6A typical
  • Rx AF max. 200mA typical
  • Power save 20mA typical
  • Operating temp. range: –15°C to +55°C
  • Antenna impedance: 50Ω (STUD)
  • Dimensions: 61(W)×135(H)×41(D) mm
  • Weight (approx.; with BP-224): 360g
  • TRANSMITTER
  • Output power: 5W (High), 1W (Low)
  • Modulation system: Variable reactance frequency modulation
  • Max. frequency deviation: ± 5kHz
  • Frequency error: ± 1.5 kHz
  • Spurious emissions: 250nW
  • Adjacent channel power: 70dB
  • Audio harmonic distortion: 10% (at 60% deviation)
  • Residual modulation: 40dB
  • RECEIVER
  • Sensitivity (at 20dB SINAD): –2dBµ emf typical
  • Squelch sensitivity: 0dBµ emf typ. (at threshold)
  • Adjacent Ch. Selectivity: 70dB
  • Spurious response: 70dB
  • Intermodulation rejection: 68dB
  • Hum and noise ratio: 40dB
  • Audio output power: 0.2W (at 10% distortion with an 8Ω load)
  • Specifications for the IC-M31 are measured in accordance with EN301-178. All stated specifications are subject to change without notice or obligation.
  • BC-119N
    Universal Icom Fast Charger
  • BC-121N
  • BC-145
    AC adapter for BC-119N & BC-144
  • BC-147A/E
    AC adapter (For BC-166. 120/240V)
  • BC-162
    Single desktop rapid charger
  • BP-223
    Alkaline battery case for IC-M21 and IC-M31.
  • BP-252
    980mAh 7.4V Lithium-Ion battery pack
  • CP-17L
    Cigar lighter lead for battery chargers
  • MB-68
    Standard type belt clip
  • MB-96
    Swivel type belt hangar for use with BP-208N, BP-209N, BP-210N, BP-211N, BP-222N battery packs.
  • MB-96F
    Leather belt clip (Discontinued)
  • OPC-515L
    DC lead for battery chargers
  • OPC-656
    DC Power Cable (for use with BC-121)
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