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The JMC NT-1800 NAVTEX Receiver is a high-end GMDSS-compliant NAVTEX receiver designed for SOLAS vessels and professional marine navigation systems. It provides automatic reception of maritime safety information such as navigation warnings, weather forecasts, and distress alerts.
The NT-1800 is a dual-channel NAVTEX receiver that continuously monitors international maritime safety broadcasts.
It receives and processes NAVTEX messages on:
It supports simultaneous reception of 518 kHz and one additional frequency (490 or 4209.5 kHz) for uninterrupted message monitoring.
| Parameter | Specification |
|---|---|
| Model | JMC NT-1800 |
| Type | GMDSS NAVTEX Receiver |
| Compliance | IMO MSC.148(77), IEC 61097-6 Ed.2, IEC 60945 |
| Application | SOLAS / Commercial marine vessels |
| Display | 5.7″ color TFT LCD |
| Resolution | 320 × 240 (QVGA) |
| Backlight | LED (white, long life) |
| Weight | ~2.3–2.5 kg |
| Dimensions | ~248 × 196 × 129 mm |
| Installation | Console / bracket mount |
| Parameter | Specification |
|---|---|
| Frequencies | 518 kHz (International) |
| 490 kHz (Local) | |
| 4209.5 kHz (HF NAVTEX) | |
| Reception Mode | F1B (Narrow Band Direct Printing) |
| Operation | Dual-channel simultaneous reception |
| Sensitivity | ~1 µV for message reception |
| Antenna Input | 50 Ω coaxial |
| Antenna Type | Active whip antenna (1.2 m) |
| Parameter | Specification |
|---|---|
| Display Type | TFT LCD color |
| Screen Size | 5.7 inch |
| Characters per line | 40 characters |
| Lines per screen | ~20 lines |
| Message Format | NAVTEX standardized format |
| SAR Display | Highlighted in RED |
| Message View | Live + stored messages |
| Parameter | Specification |
|---|---|
| Message Storage | 200 messages per frequency |
| Protected Memory | 50 messages |
| Average Message Size | ~500 characters |
| Total Capacity | ~106,000+ characters per band |
| Retention Time | ~60 hours + FIFO overwrite |
| Storage Type | Non-volatile memory |
| Parameter | Specification |
|---|---|
| NMEA Standard | IEC 61162-1 (NMEA 0183) |
| INS Interface | RS-422 |
| Printer Interface | RS-232C |
| Data Port | 8-pin I/O port |
| External Output | Alarm + message data |
| Feature | Description |
|---|---|
| Dual Receiver | Simultaneous monitoring |
| Message Filtering | By station & category (A–Z) |
| Alarm System | Audible + visual (SAR priority) |
| Message Protection | User selectable |
| Automatic Operation | 24/7 unattended |
| Self-Test | Built-in diagnostics |
| Display Settings | Adjustable font/background |
| Parameter | Specification |
|---|---|
| Input Voltage | 24 V DC |
| Operating Range | 11–40 V DC |
| Power Consumption | ~11–15 W |
| Ground | Floating system |
| Parameter | Specification |
|---|---|
| Operating Temp | -15°C to +55°C |
| Storage Temp | -40°C to +70°C |
| Humidity | Up to 95% RH |
| Protection | Marine-grade rugged design |
| Compass Safe Distance | ~60 cm (standard) |
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