Description
SI-TEX MDA-5 5W SOTDMA Class B AIS Transceiver | Boat Supply Store
For serious mariners requiring superior vessel identification and collision avoidance, the SI-TEX MDA-5 delivers advanced 5-Watt SOTDMA Class B AIS transmission, ensuring network priority even in congested waterways. Its integrated zero-loss VHF antenna splitter simplifies installation, and the long-range Wi-Fi connectivity allows for seamless data sharing to multiple devices. Operating within a wide 9.6-31.2 VDC input range and boasting IPX7 waterproofing, this transceiver provides robust performance in challenging marine environments, from the Gulf Intracoastal Waterway to offshore passages.
Key Features
- Maximize long-range visibility with 5-Watt SOTDMA Class B AIS transmission for enhanced network priority.
- Simplify installation with an integrated zero-loss VHF antenna splitter, eliminating the need for a separate unit.
- Expand connectivity options using long-range 802.11 b/g/n Wi-Fi for device integration.
- Integrate seamlessly with existing marine electronics via NMEA-0183, NMEA-2000, and USB interfaces.
- Ensure precise positioning with a built-in GPS & GLONASS receiver for accurate data transmission.
- Operate confidently in harsh conditions due to IPX7 waterproof certification.
- Receive all vital DSC and AIS messages, including MOB & SART, with dual receivers.
- Gain Class A priorities in busy harbors and shipping lanes through SOTDMA technology.
Specifications
| Product Specifications | |
|---|---|
| Transmitter Output Power | 5 Watts |
| AIS Class | SOTDMA Class B |
| VHF Antenna Splitter | Integrated Zero-Loss |
| Wi-Fi Connectivity | Long Range 802.11 b/g/n |
| Data Interfaces | NMEA-0183, NMEA-2000, USB |
| GPS Receiver | Built-in GPS & GLONASS |
| Waterproofing | IPX7 Certified |
| Receivers | Dual |
| Input Voltage | 9.6-31.2 VDC |
| Average Current Draw | 220mA |
| Operating Temperature | -25°C to +55°C |
| Dimensions | 6.8" W x 5.0" H x 2.0" D |
| Weight | 0.8 lbs |
Who This Is For
Serious recreational boaters, commercial vessels, and offshore sailors demanding superior situational awareness and collision avoidance. Ideal for mariners operating in busy waterways or requiring long-range vessel tracking and priority communication.
How It Compares
| Feature | SI-TEX MDA-5 5W SOTDMA Class B AIS Transceiver | Competitor |
|---|---|---|
| Transmitter Output Power | 5 Watts | 5 Watts, 2 Watts |
| AIS Class | SOTDMA Class B | Class B, Class B |
| Integrated Antenna Splitter | Yes | No (External Required), Yes |
| Long Range Wi-Fi | Yes | No, Yes |
| Network Priority (SOTDMA) | Yes | No, No |
Common Concerns Answered
Are there any programming complexities for US users?
The SI-TEX MDA-5 requires programming for US sales, which some users find to be a hurdle. This process ensures compliance and correct operation, and while it may add complexity for DIY installers, it guarantees the unit is set up accurately for its intended use.
Is professional installation required for programming?
While the unit itself is designed for straightforward integration, the mandatory programming for US sales can add to initial setup costs and complexity. For users uncomfortable with technical procedures, engaging a qualified marine technician is recommended for seamless programming and integration.
Will this unit integrate with my existing NMEA 2000 network?
Yes, the SI-TEX MDA-5 fully supports NMEA-2000 connectivity, allowing for seamless integration with your existing marine navigation and instrumentation network for comprehensive data sharing and display on compatible MFDs and instruments.
Frequently Asked Questions
What is SOTDMA Class B AIS and why is it important?
SOTDMA (Self-Organizing Time-Division Multiple Access) Class B AIS is an advanced AIS transmission protocol that provides priority access to the communication slots on VHF channels, significantly reducing the chance of missed transmissions and ensuring your vessel is seen by others, especially in congested areas. This offers a higher level of reliability and network efficiency compared to standard Class B AIS.
Does the SI-TEX MDA-5 require a separate VHF antenna?
No, the SI-TEX MDA-5 features an integrated zero-loss VHF antenna splitter. This allows it to share your existing VHF antenna with your VHF radio, simplifying installation and reducing the need for additional antenna hardware.
Can I connect the MDA-5 to my existing NMEA 2000 network?
Absolutely. The SI-TEX MDA-5 is equipped with NMEA-2000 connectivity, enabling it to interface directly with your boat's NMEA-2000 backbone for seamless data sharing with compatible chartplotters, radar systems, and other NMEA-2000 enabled devices.
What devices can I connect to the MDA-5 via Wi-Fi?
The long-range Wi-Fi capability allows you to connect compatible tablets, smartphones, laptops, or other Wi-Fi enabled devices. This enables the display of AIS targets, vessel data, and other navigation information on your preferred mobile or computing platform.
Is the MDA-5 waterproof?
Yes, the SI-TEX MDA-5 is IPX7 waterproof certified, meaning it can withstand submersion in up to one meter of water for 30 minutes. This robust construction ensures reliable operation even in wet marine environments.
