Overview

The Raymarine T122 is a wireless NMEA interface that links wired NMEA 0183 electronics to the Micronet Wireless network. It runs on 9-24 V DC, supports NMEA 0183 version 2.30, and gives you two input channels plus one output channel for moving navigation data into a Micronet setup.

On a boat with Micronet displays, this interface lets data from a GPS, chartplotter, autopilot, or onboard PC move onto the wireless network without adding another data cable run to each display. It is a practical fit when the rest of the system already speaks NMEA 0183 and you want key information visible around the boat through Micronet instruments.

Key features

• Bridges wired NMEA 0183 equipment into the Micronet Wireless network
• Supports NMEA 0183 version 2.30 for compatibility with common marine electronics
• Two NMEA input channels and one output channel for flexible system layout
• Runs from the boat's 9-24 V DC supply, so it suits both 12 V and 24 V systems
• External alarm connector for tying alerts into the onboard system
• Lightweight 135 g housing that is easy to mount near existing instrument wiring

Compatibility and fit

The T122 works with Micronet wireless instruments and with onboard equipment that outputs or accepts NMEA 0183 data. It handles the core data types most boaters care about, including depth, heading, wind, position, waypoint, and speed-related information, so it makes sense on boats that need to share navigation data between older wired electronics and wireless displays.

Before buying, confirm that the source electronics provide NMEA 0183 connections. This interface is built around that standard, so it is best suited to boats where the existing chartplotter, autopilot, GPS receiver, or PC already communicates over 0183.

Installation and setup

The unit is powered from the boat's DC system, which keeps installation straightforward on either 12 V or 24 V boats as long as supply voltage stays within the 9-24 V range. Mounting is simplest when the interface is placed close to the source wiring and in a protected spot where cable runs can be secured cleanly.

Its low weight helps when space is limited behind a panel or at the nav station. The external alarm connection is useful on installations where warning output needs to be tied into the rest of the onboard system.

Use on board

This interface is a strong match for owners who already use Micronet displays and want to bring in data from a GPS, autopilot, chartplotter, or navigation PC without adding extra display wiring around the boat. It also suits setups where navigation or tactical software data needs to be visible on deck through the Micronet network.