Icom · VHF radio

Icom IC-M330 / IC-M330GE

The IC-M330 is Icom’s smallest fixed-mount VHF radio: a 156.5 × 66.5 mm front, 25 W, Class D DSC with its own channel-70 receiver, IPX7, and a hand microphone (HM-235B in black, HM-235W in white) that is permanently attached to the set. It came out at the turn of 2017/2018 in four versions sharing one manual: the IC-M330 and IC-M330G for the US and other markets, the IC-M330E and IC-M330GE for Europe; the G versions add a GPS/GLONASS receiver with a small external antenna on a 5 m cable, and the German and Dutch sets also carry an ATIS ID. The bracket, the MBF-5 flush mount kit, the external speakers and the AIS link are the same for all four. It took over from the IC-M323/M323G (in the US the IC-M324/M324G), a bigger 180 × 82 mm set with the GPS receiver inside the front panel and the MB-132 flush mount kit. The larger IC-M423GE, IC-M430E and IC-M510E are separate models with their own manuals and accessories.

Manuals & documents

The links go straight to Icom: Icom Europe’s download area, Icom America’s manual pages (accept Icom’s terms and the download starts) and Icom France’s product page with its accessory list. We host no manuals or drawings — the manufacturer’s copy is the current one.

Wear parts & part numbers

PartOEM numberAlso fitsNote
Hand microphoneHM-235B · HM-235W1,2,3,4,5—The supplied hand microphone with channel up/down keys and a 16/C key: HM-235B black, HM-235W white. It is permanently attached, not plugged in; Icom France calls it non-removable and sells both colours as replacements, so ask an Icom dealer to fit one.
Installation kitMBF-56,1,2,7,8—Flush mount kit for an instrument panel up to 19 mm thick: cut-out 139 × 53 mm with R8 corners (template in the manual), two 5 × 8 mm bolts with spacers on the sides of the radio, clamps with end bolts, locking nuts at 2 N·m. Toplicht sells it as article 3938-335.
GNSS (GPS) antennaUX-240P · 08000160409,10,11,6—External GPS patch antenna with 5 m cable, supplied with the IC-M330G and IC-M330GE; 0800016040 is the spare-part number Icom France gives for it. It sticks on with the supplied double-sided pad and needs a clear view of the sky.
GNSS (GPS) antennaUX-2412—GNSS antenna that Icom America lists as the optional GPS antenna for the IC-M330 and IC-M330G. One source only: the European pages do not name it.
External speakerSP-373,12,2,13,6—Horn speaker that Icom names as the external speaker option for the M330 series. It goes on the blue (+) and black (−) leads; switch AquaQuake off while an external speaker is connected.
External speakerSP-249,14—External speaker, 7 W, 4 Ω, with 4.5 m cable, which Icom France lists as compatible with the IC-M330GE.
Power cableOPC-891A9,15,6—DC power cable; the radio comes with one that has the fuse holder built in. Icom France lists the OPC-891A as the compatible power cord for the IC-M330GE (also for the IC-M423GE and GM600); the manuals give no number, so one source only. Never cut the cable between the radio’s plug and the fuse holder.
Fuse—6,16—10 A fuse rated 250 V (marked F 250 V 10 A) in the holder of the DC cable. If it blows, find and fix the cause before fitting a new one of the same rating.
Mounting bracket—6—Supplied mounting kit: U-bracket, two knob bolts, M5 flat and spring washers, two 5 × 20 mm screws, plus a microphone hanger with 3 × 16 mm screws. Icom publishes no separate part numbers for them.
AIS transponderMA-500TR · MA-510TR6,1,17—Icom class B AIS transponders that work with the M330: connected to the NMEA leads, they let you pick an AIS target and send it an individual DSC call through the radio without typing its MMSI.
CableOPC-20146,18—NMEA cable that comes with the MA-500TR. Wire the M330’s leads to it as follows: yellow (Listener A) to lead 3, green (Listener B) to lead 2, white (Talker A) to lead 5, brown (Talker B) to lead 4. For the MA-510TR follow its own manual.
CableOPC-IFMA500TR506 · OPC-IFMA510TR9,19,20—Ready-made 1 m NMEA in/out cords from Icom France between an MA-500TR or MA-510TR and Icom fixed VHF radios, listed for the IC-M330GE.
VHF antennaAH-BA00067 · AH-BA002479,21,22,6—VHF antennas that Icom France lists for the IC-M330GE: AH-BA00067, 3 dBi, 1.5 m, with nylon mount, 5 m coax and PL-259; AH-BA00247, 3 dB, 1.5 m, with 6.6 m RG58 cable and PL-259 (mount not included). For Europe the manual recommends at most 3 dB gain.
DC-DC converter (24 → 12 V)PS-PV12I9,23,6—24 to 12 V converter with isolated ground, 12 A continuous and 18 A intermittent, which Icom France lists for the IC-M330GE. The radio itself must never see more than 16 V.
MMSI reset toolDG-39759,24—MMSI reset dongle for the IC-M330 with a programming adapter board, sold by Icom France: a dealer tool for clearing a stored MMSI. Depending on the firmware, Icom also clears it with a one-time activation code (see the tips).
Installation kitMB-13218—Predecessor only: flush mount kit for the IC-M323, M323G, M324 and M324G, in a 165.1 × 62.4 mm cut-out. It does not fit the M330, which takes the MBF-5.

Numbers checked against the sources below on 23 October 2026. Always confirm against your serial number and exact type before ordering.

Service intervals

TaskInterval
Fresh-water washAfter every exposure to salt water: rinse radio and microphone with fresh water and let them dry before use, or salt crystals can jam keys and switches. Dust and dirt: wipe with a soft, dry cloth; no benzine, alcohol or other harsh solvents. If the waterproofing looks damaged, clean carefully with a soft cloth wetted with fresh water and dry it6
Electrical connectionsNo interval given. The DC plug and the NMEA and speaker leads are not waterproof: keep them wrapped in self-vulcanising rubber tape. If the radio does not switch on, check the power connection and the 10 A fuse in the DC cable, and fix the cause before renewing the fuse. NO POSITION and NO TIME on a G or GE: check the GPS antenna, its plug and its view of the sky6
DSC test callNo interval set by Icom. Send a DSC test call (Other DSC > Type: Test) on channel 70 to another station, picked from the address list or entered by its MMSI, and wait for the acknowledgement; by default the M330 itself answers incoming test calls automatically. Avoid tests on the distress and safety channels, or mark them clearly as tests. The DSC keys only appear once an MMSI is stored6

From Icom’s instruction manual for the IC-M330, IC-M330E, IC-M330G and IC-M330GE. Icom sets no maintenance schedule in hours or months and the radio has no parts for the owner to service; the manual asks for fresh-water rinses after salt spray, sealed and sound connections, a working antenna and GPS antenna, and DSC test calls.

Specifications

ModelsIC-M330 (without GPS) and IC-M330G (with GPS): versions for the USA and other markets, channels USA, INT, CAN and WX · IC-M330E (without GPS, only in some countries) and IC-M330GE (with GPS): European versions with INT channels, the German and Dutch sets with ATIS · In black or white, with the matching HM-235B or HM-235W hand microphone6,2,17,3
Years builtIcom’s first brochure is dated 2017; the IC-M330GE was in UK shops from mid-January 2018, and Icom introduced the M330 in the US in early 2018. Icom Europe’s 2026 catalogue and Icom France still list the IC-M330GE3,25,26,17,9
PredecessorIC-M323 (manual from 2012) and IC-M323G with GPS, in the US IC-M324 and IC-M324G: 180 × 82 × 119.9 mm, 1.2 kg, on the G versions the GPS receiver sits inside the front panel, MB-132 flush mount kit in a 165.1 × 62.4 mm cut-out. A dealer lists the M330G as the M323G’s replacement27,18,28,29
TypeFixed-mount marine VHF radio with Class D DSC and a separate channel-70 watch receiver, Dualwatch and (depending on the version) Tri-watch, normal and priority scan with favourite channels, AquaQuake speaker draining, dot-matrix display with soft keys. Icom quotes selectivity and intermodulation rejection above 70 dB; the IC-M330GE meets ITU-R M.493-146,1,3
PowerTransmit 25 W or 1 W (HI/LO key); some channels are limited to low power or to receive only by regulation6
Frequencies & channelsIC-M330E/GE: transmit 156.000–162.000 MHz, receive 156.000–163.425 MHz · IC-M330/G: transmit 156.025–161.600 MHz, receive 156.050–163.275 MHz · DSC on channel 70 (156.525 MHz), 25 kHz channel spacing, FM (16K0G3E) and DSC (16K0G2B); 3- or 4-digit channel display6,2
Voltage13.8 V DC nominal, negative ground: 10.8–15.6 V on the IC-M330E/GE, 11.7–15.9 V on the IC-M330/G. Never more than 16 V, so not on a 24 V battery6,2
Current drawAt 13.8 V: up to 5 A transmitting at 25 W, up to 1 A receiving at full volume6,2
Breaker / fuse10 A fuse (marked F 250 V 10 A) in the holder of the supplied DC cable6,16
Waterproof ratingIPX7 (1 m for 30 minutes) for the radio and its microphone, except the DC plug and the NMEA and speaker leads. Once dropped or cracked, Icom no longer guarantees the seal6,1
Operating temperature−20 °C to +60 °C; not in direct sun, such as on top of a dashboard6
Dimensions156.5 × 66.5 × 88.2 mm without projections (manual, Icom catalogue); Icom Europe’s pages give a depth of 110.1 mm. With the supplied bracket 178 mm wide, 79.25 mm high and 118.7 mm deep6,17,1,30
WeightAbout 730 g6,2
MountingSupplied U-bracket with two knob bolts on a surface more than 10 mm thick that carries more than 5 kg, fixed with two 5 × 20 mm screws (two 6 mm holes 90 mm apart, template in the manual) · MBF-5 flush mount kit for panels up to 19 mm: cut-out 139 × 53 mm with R8 corners, locking nuts 2 N·m · At least 1 m from the magnetic compass6
PortsOn the back: DC power connector (red +, black −), SO-239 antenna socket for a PL-259 plug, GPS antenna socket (G and GE only), ground terminal for an M3 × 6 screw, and a lead bundle: NMEA in yellow (+) and green (−), NMEA out white (+) and brown (−), external speaker blue (+) and black (−); orange and grey are for service only. Cut off the plug that holds the leads together before wiring6
Data connectionsNMEA 0183 (version 2.0 or later). In: RMC, GGA, GNS, GLL and VTG from an external GPS, which takes priority over the GPS antenna. Out: DSC and DSE (positions of calling ships, for a plotter); the GPS versions also send RMC, GSA and GSV. With an MA-500TR or MA-510TR AIS transponder, individual DSC calls to AIS targets without typing the MMSI6,2
GNSS receiverIC-M330G/GE only: built-in GPS, GLONASS and SBAS receiver (WAAS, EGNOS, MSAS, GAGAN) with an external antenna on a 5 m cable (IP67 according to Icom Europe); up to 24 channels tracked, 12 used for the fix. Without GPS, position and time can be entered by hand and stay valid for 23.5 hours6,31,2
Audio outputInternal speaker more than 2 W, external speaker more than 4.5 W (4 Ω, 10% distortion); Icom America gives 4.5 W typical for the US version6,2
MMSI & ATIS9-digit MMSI entered by the owner once, at the first switch-on; German and Dutch versions also take a 10-digit ATIS ID once. After that only a dealer or distributor can change them or, depending on the firmware, a one-time activation code from Icom that clears MMSI and ATIS ID together6,32

Good to know

  • Buying used: look under Menu > Radio Info for the stored MMSI (and ATIS ID). The owner can enter the 9-digit MMSI only once, at the first switch-on, and German and Dutch sets take a 10-digit ATIS ID once; after that only a dealer or distributor can change them. Icom France sells the DG-3975 reset dongle for this. On newer firmware, Menu > Configuration > MMSI Clear shows a 16-digit request code; Icom then e-mails a one-time activation code that clears MMSI and ATIS ID together, and may ask for proof of purchase.6,32,24
  • Power: 13.8 V nominal, never more than 16 V. On a 24 V boat it needs a converter (Icom France lists the PS-PV12I). Mind the polarity (red +, black −), never cut the DC cable between the radio’s plug and the fuse holder, and wrap the DC plug and the NMEA and speaker leads in self-vulcanising rubber tape: only the radio itself is IPX7.6,23
  • Replacing an IC-M323 or IC-M324 with an M330: the old sets have a 180 × 82 mm front and sit with the MB-132 kit in a 165.1 × 62.4 mm cut-out, while the M330 needs the MBF-5 and a 139 × 53 mm cut-out in a panel up to 19 mm thick. The old hole is too big, so plan a filler plate or use the bracket instead.6,18
  • On the IC-M330G and GE, place the supplied GPS antenna (5 m cable) with a clear view of the sky and stick it down with its pad; if NO POSITION and NO TIME appear, check that antenna and its plug first. A GPS on the NMEA input takes priority over the antenna. Without any GPS you can enter position and time by hand, but they only last 23.5 hours or until switch-off, after which “??” blinks in their place.6
  • Muffled sound after spray: hold the AQUA soft key and the speaker vibrates for up to 10 seconds to shake the water out of the grille. Do not use AquaQuake while an external speaker is connected. An external 4 Ω speaker on the blue (+) and black (−) leads gets more than 4.5 W against the 2 W of the built-in one; Icom names the SP-37, Icom France also the SP-24.6,3,14
  • The VHF antenna goes on the SO-239 socket with a PL-259 plug; never transmit without one. For European installations Icom recommends an antenna of at most 3 dB gain, mounted at least 1.76 m above any spot people can reach; the US text allows up to 9 dBi but asks for 5 m above the deck. Keep the radio and its microphone at least 1 m from the magnetic compass.6

Videos & how-tos

Links to YouTube, nothing embedded. The maker’s own channel comes first; the rest are channels we found clear and correct for this model.

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Sources

  1. icomeurope.com/en/product/ic-m330ge-ic-m330e/
  2. icomamerica.com/lineup/products/IC-M330/
  3. icomeurope.com/wp-content/uploads/2019/07/IC-M330E_GE.pdf
  4. icomfrance.com/fr/produit/HM-235B.php
  5. icomfrance.com/fr/produit/HM-235W.php
  6. icomeurope.com/wp-content/uploads/2023/05/IC-M330GE_ENG_IM_9.pdf
  7. icomfrance.com/fr/produit/MBF-5.php
  8. toplicht.de/en/safety-vhf-radio/vhf-radios/vhf-radio-stations/4048/icom-ic-m-330ge-gps-vh…
  9. icomfrance.com/fr/produit/IC-M330GE.php
  10. icomfrance.com/fr/produit/UX-240P.php
  11. icomfrance.com/uploads/files/produit/doc-M330SERIE-fr.pdf
  12. icomeurope.com/wp-content/uploads/2026/03/IC-M330GE_GER_BRO_20180706.pdf
  13. icomjapan.com/lineup/products/IC-M330/
  14. icomfrance.com/fr/produit/SP-24.php
  15. icomfrance.com/fr/produit/OPC-891A.php
  16. icomeurope.com/wp-content/uploads/2026/03/IC-M330E_M330GE_IM_D_Web_20180702.pdf
  17. icomeurope.com/wp-content/uploads/2026/03/Marine-Catalogue-Euro-A4.pdf
  18. icomamerica.com/api/download.php?post_id=2275&fl=JTJGdXBsb2FkcyUyRnN1cHBvcnQlMkZtYW51YWwl…
  19. icomfrance.com/fr/produit/OPC-IFMA500TR506.php
  20. icomfrance.com/fr/produit/OPC-IFMA510TR.php
  21. icomfrance.com/fr/produit/AH-BA00067.php
  22. icomfrance.com/fr/produit/AH-BA00247.php
  23. icomfrance.com/fr/produit/PS-PV12I.php
  24. icomfrance.com/fr/produit/DG-3975.php
  25. ybw.com/vhf-marine-radio-guide/icom-news/icom-ic-m330ge-cant-believe-the-size-cant-believ…
  26. professionalmariner.com/icom-introduces-m330-fixed-mount-compact-radio/
  27. icomamerica.com/support/manual/2275/
  28. icomamerica.com/support/manual/2276/
  29. bluebottlemarine.com/products/icom-vhf-ic-m323g-discontinued-replaced-with-m330g.html
  30. icomeurope.com/wp-content/uploads/2023/07/Marine_Dimension_Guide_ENG_Mobile_Type_0.pdf
  31. icomeurope.com/produkt/ic-m330ge-ic-m330e/
  32. icomamerica.com/support/manual/4589/

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