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The Raymarine R28171 long masthead unit is a critical mechanical spare part for wind measurement systems. It provides the wind transducer and vane anemometer functions, accurately capturing apparent wind direction and speed.

The "long" design of this masthead is specifically adapted to optimize height measurement. It allows positioning the sensors (wind transducer/vane anemometer and anemometer cups) further from the turbulence generated by the mast itself or by other equipment installed at the masthead (such as VHF antennas or navigation lights). This elevation contributes to more accurate and stable apparent wind readings.

No, the Raymarine R28171 long masthead unit is a mechanical spare part. It is designed to specifically replace the upper section (wind transducer/vane anemometer) of an existing wind sensor, without including the full electronic transducer or connection cable.

This masthead unit is primarily designed for maintaining wind sensors associated with older Raymarine systems, particularly those requiring modular components such as the ST290 system. It restores functionality to an existing system by replacing the upper mechanical section.

No, the R28171 long masthead fitting is not compatible with newer integrated wind sensors such as the Raymarine i60 or i70s. These systems are complete units and are not designed to use modular components like the R28171.

Once correctly installed and connected to a compatible Raymarine system, this masthead unit measures apparent wind direction and speed. This data is essential for sailboat navigation and performance optimization.

The R28171 long masthead fitting is a mechanical spare part. Its installation typically involves replacing the existing masthead fitting on the existing transducer. It is recommended to follow the specific instructions provided in your Raymarine system installation manual to ensure correct and secure installation.

The R28171 product corresponds to the "long masthead alone". The packaging contains only the upper mechanical part of the wind sensor, i.e., the vane and the cups of the anemometer. The electronic transducer, the connection cable, or other accessories are not included.