Technical Specification

📡 GENERAL RECEIVER

• Type: NAVTEX receiver with printer (SOLAS / GMDSS compliant)
• Receiving Frequencies:
  • 518 kHz (International NAVTEX)
  • 490 kHz or 4209.5 kHz (Local/Regional NAVTEX)
• Reception Mode: F1B narrowband NAVTEX modulation
• Simultaneous Reception: Dual-channel operation (both frequencies at same time)
• Sensitivity: ~2 µV e.m.f. (50 Ω, 4% error rate)
• Spurious Emission: ≤ 1 nW

🖥️ DISPLAY UNIT

• Display Type: Monochrome LCD (QVGA)
• Screen Size: 5 inch
• Resolution: 240 × 320 dots
• Display Modes:
  • Message inbox / list mode
  • Message detail display mode
• Message Storage:
  • 200 messages × 2 channels
  • Up to ~100,000 characters per channel

🖨️ PRINTER SECTION (NX-700A ONLY)

• Type: Line thermal printer
• Paper: 58 mm thermal roll
• Print Speed: ~20 mm/sec
• Characters per line: 32 characters
• Print Width: 48 mm

📶 ANTENNA SYSTEM

• Type: H-field loop antenna (compact marine design)
• Integrated Preamp: Yes (for improved reception stability)
• Waterproof Rating: IP66 (antenna unit)

🔌 POWER SUPPLY

• Input Voltage: 12–24 V DC
• Power Consumption: ~1.5–0.8 A (low power ship operation)

📡 INTERFACE / CONNECTIVITY

• NMEA 0183 compatible
• Supports GPS data input/output:
  • GGA, GLL, RMC, ZDA, VTG, etc.
• Acts as NMEA repeater display for navigation data

🚢 MESSAGE CATEGORIES RECEIVED

• Navigational warnings
• Meteorological warnings & forecasts
• Search & Rescue (SAR) messages
• Ice reports
• Pilot messages
• AIS / satellite navigation messages (system dependent)

⚓ PHYSICAL / MARINE RATING

• Receiver Unit: IP20
• Display Unit: IP20
• Weight: ~3.3 kg total system