DSC uses a unique ID (MMSI code) similar to a telephone number, allowing you to make contact with a specific boater or group of boaters in your area. A total of 100 address IDs can be stored with a 5-character name.
With an external GPS receiver, the position request and position report functions allow you to exchange ships position. The received position information can be plotted on a third party GPS or other navigation equipment which accepts NMEA data format. The polling (request/reply) function checks whether a specific ship is in the communication range.
ICOM M422 Features
- Submersible* (1m depth for 30 minutes.)
*Equivalent to IPX7, except cables.
- Large 2-digit channel with scrolling names
- 7-step keypad backlighting
- 4-step LCD contrast
- Dual watch and Tri-watch functions
- Super white and black versions available.
- Simple and easy tag scanning system
- NOAA weather channels with alert function
- Low voltage indicator for low battery alert
Frequency range Tx Rx |
156.025 - 157.425MHz
156.050 - 163.275MHz |
| Usable channels | USA, INT, CAN, WX channels |
| Type of emission | 16K0G3E (FM), 16K0G2B (DSC) |
| Power supply requirement | 13.8V DC ±15% |
Current drain (at 13.8V DC) Tx Rx |
5.5A (at 25W output) 1.5A (at AF max.) |
| Operating temp. range | –20°C to +60°C, –4°F to +140°F |
| Antenna impedance | 50Ω (SO-239) |
Dimensions (projections not included) Unit Cutout | 164(W) × 78(H) × 139.3(D) mm 615⁄32(W) × 31⁄16(H) × 515⁄32(D)in. 5 7/8 (W) x 2 7/16 (H) |
| Weight (approx.) | 1070g; 2.4lb |
| NMEA In/out formats | RMC, CGA, GNS, GLL |
| Transmitter |
|---|
| Output power | 25W, 1W (at 13.8V DC) |
| Modulation system | Variable reactance freq. mod. |
| Max. freq. deviation | ± 5.0kHz |
| Frequency error | ± 10.0ppm (-20°C to +60°C) |
| Spurious emissions | Less than –70dBc |
| Residual modulation | More than 40dB |
| Adjacent Ch. power | More than 70dB |
| Audio frequency response | +1dB to -3dB of 6dB octave from 300Hz to 2500Hz |
| Receiver |
|---|
| Intermediate freq. | 1st 21.7MHz, 2nd 450kHz |
| Sensitivity | 0.22µV typical at 12dB SINAD |
| Squelch sensitivity | Less than 0.22uV |
| Adjacent Ch. selectivity | More than 70dB |
| Spurious response | More than 70dB |
| Intermodulation | More than 70dB |
| Hum and noise ratio | More than 40dB |
| Audio output power | 4.5W typical at 10% distortion with a 4Ω load |
| Audio frequency response | +1dB to -3dB of 6dB octave from 300Hz to 2500Hz |
All stated specifications are subject to change without notice or obligation.
M422 VHF Hand microphone DC Power Cable Mounting bracket kit
