Certified marine electronics engineering services for the Weatherdock easyAIS Dual Channel AIS Receiver (RX Only). Seanav Marine provides onboard attendance across UAE ports (Dubai, Fujairah, Jebel Ali, Sharjah, Abu Dhabi) for VHF antenna diagnostics, dual-channel receiver sensitivity testing, NMEA 0183 & USB chartplotter interfacing, and power circuitry repairs.
Frequencies: 161.975 MHz (AIS 1) & 162.025 MHz (AIS 2)
Data Output: NMEA 0183 (38,400 baud high speed) / USB
Supply Voltage: 9 – 28 VDC
NAVCOM Service UAE •
Marine Equipment Programming & Reprogramming UAE •
Vessel Flag Change Reprogramming
UAE Port Attendance:
Fujairah Port •
Fujairah Anchorage (24/7) •
Jebel Ali •
Dubai Maritime City •
Khor Fakkan
The Weatherdock easyAIS is a dedicated receive-only (RX) marine AIS device engineered to decode Class A, Class B, AIS SART, and AtoN transmissions for display on navigation chartplotters, radar displays, and ECDIS systems. As an RX-only unit, it does not transmit RF signals, does not possess an internal RF power amplifier, does not store a vessel MMSI number, and is not subject to IMO MSC.1/Circ.1252 annual performance testing (APT). If your vessel requires Class A or Class B AIS transponder programming, MMSI changes, or APT certification, please refer to our Marine Equipment Programming & Reprogramming UAE service.
1. Technical Service, Repair & Diagnostics Scope
Seanav Marine electronics engineers attend commercial tugs, offshore support vessels, workboats, and private yachts throughout the UAE to troubleshoot and maintain Weatherdock easyAIS receivers and integrated navigation networks.
📡 RF Front-End & Receiver Sensitivity Diagnostics
- Simultaneous dual-channel receiver sensitivity testing on 161.975 MHz and 162.025 MHz (-107 dBm threshold check)
- VHF antenna VSWR analysis and coaxial cable attenuation sweeps (RG-58, RG-213, RG-214)
- VHF antenna splitter insertion loss testing (easySPLIT units)
- BNC/PL-259 connector corrosion remediation and marine weatherproofing
🔌 NMEA 0183 & Chartplotter Interfacing
- NMEA 0183 HS (38,400 baud) output configuration and signal parity verification
- Integration with Furuno NavNet, Raymarine Axiom, Garmin GPSMAP, Simrad, and B&G displays
- !AIVDM sentence decoding and target collision data stream verification
- USB FTDI driver and baud rate configuration for PC navigation software (OpenCPN, MaxSea/TimeZero)
⚡ Power Supply & PCB Component Repair
- DC voltage regulation troubleshooting (9–28 VDC input range)
- Transient voltage suppressor (TVS) diode and reverse-polarity protection diode replacement
- Power rail capacitor filtering and internal DC-DC converter diagnostics
- Enclosure IP rating inspection and desiccant renewal
🚢 24/7 UAE Onboard Support
- Rapid attendance at Dubai Maritime City, Jebel Ali, Fujairah Anchorage, and Sharjah
- Pre-tested replacement AIS receivers and marine-grade VHF antennas in stock
- Complete NMEA data logger capture for intermittent target dropouts
- Official Seanav service report detailing RF sensitivity, VSWR, and NMEA signal integrity
2. Common easyAIS Operational Faults & Troubleshooting
| Observed Symptom | Root Technical Cause | Seanav Engineering Action |
|---|---|---|
| No AIS Targets on MFD | NMEA 0183 baud rate mismatch (4,800 baud selected instead of 38,400 baud high speed) | Reconfigure chartplotter NMEA port to 38,400 bps; verify !AIVDM data sentences with oscilloscope/terminal. |
| Extremely Short Target Range (< 2 NM) | High VHF antenna VSWR (> 2.5:1), degraded coaxial line, or water ingress at antenna base | Perform VHF antenna sweep test, re-terminate PL-259/BNC connectors, or install tuned marine AIS whip antenna. |
| Unit Will Not Power On (LEDs Dark) | Blown internal protective fuse or shorted TVS clamping diode due to vessel alternator voltage spike | Bench diagnostic of DC power rail, replace blown surge-protection components, calibrate power filtering. |
3. Need Technical Support or Transponder Upgrade in UAE?
Whether you require troubleshooting for an existing Weatherdock easyAIS receiver or wish to upgrade your vessel to a Class A/B AIS transponder with MMSI programming for commercial compliance, our UAE-based marine electronics engineers are available 24/7 across Dubai, Fujairah, Jebel Ali, Sharjah, Abu Dhabi, and Ras Al Khaimah.
Related AIS Transponders resources: AIS Transponders hub · Marine AIS Class A Transponders: Annual Survey, MMSI Reprogramming & Class Inspection · ACR AISLink CB1 Class B AIS Service, Repair & MMSI Reprogramming · ACR AISLink CB2 Class B+ (SOTDMA) AIS Service, Repair & MMSI Reprogramming · ACR AISLink CA1 Class A AIS Service, Repair & MMSI Reprogramming · easyTRX2S Class B AIS Service, Repair & MMSI Reprogramming