Compact Body (W × H × D; 156.5 × 66.5 × 110.1 mm; 6.2 × 2.6 × 4.3 in)
Easy Installation in Limited Space
Powerful Front Mount Speaker
Delivers Loud and Clear Audio
Built-in Class D DSC with a CH70
Dedicated Receiver
Intuitive Operation with
Icom’s Marine User Interface
Easy-to-Read Full Dot-Matrix Display
HM-237B Detachable
Hand Microphone Supplied
IPX7 Submersible Construction
(1 m depth of water for 30 minutes)
AquaQuake™ Prevents Audio Degradation
from a Water-Logged Speaker
Made in Japan Quality and Reliability
Other Features
- Common NMEA interface for external GPS/NAV connection
- MA-500TR Class B AIS transponder compatible
- Tag scan and favorite channel functions
- Dual/tri-watch function for monitoring CH16 and/or call channel
- Priority scan function
- Display and keypad backlighting
- External speaker connection
- Weather channel with weather alert
Frequency rangeTX
156.025–157.425 MHz
RX
156.050–163.275 MHz
CH70
156.525 MHz
Usable channels
USA, CAN, INT, WX channels
Type of emission
16K0G3E (FM), 16K0G2B (DSC)
Power supply requirement
13.8 V DC nominal
(11.7–15.9 V DC)
Current drain
(at 13.8 V DC)TX 25W output
5 A
RX AF max.
1.2 A
Operating temperature range
–20°C to +60°C; –4°F to +140°F
Antenna impedance
50 Ω(SO-239)
Dimensions (W×H×D)
(Projections not included)
156.5×66.5×110.1 mm;
6.2×2.6×4.3 inch
Weight (approx.)
700 g; 1.5 lb (with HM-237B)
NMEA formatsInput
RMC, GGA, GNS, GLL, VTG
Output
DSC, DSE, RMC, GSA, GSV
Output power (at 13.8 V DC)
25 W, 1 W
Max. frequency deviation
±5 kHz
Frequency tolerance
±5 ppm
Spurious emissions
Less than –60 dBc
SensitivityMain
–13 dBµ typ. (12 dB SINAD)
DSC
–5 dBµ emf typ. (1% BER)
Squelch sensitivity
Less than –10 dBμ
Adjacent channel
selectivityMain
More than 68 dB
DSC
More than 68 dBμ emf (1% BER)
IntermodulationMain
More than 63 dB
DSC
More than 55 dBμ emf (1% BER)
Sensitivity
–14 dBμ typ. (at 12 dB SINAD)
Hum and noise
More than 40 dB
Audio output power
(at 10% distortion with a 4 Ω load)
4.5 W typical
Ingress Protection Standard
Water IPX7 (Waterproof protection)
