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Re: For Pete's sake! I just want a speed transducer!
Still really frustrating. The only place I've found online that sells the Airmar st800 is here:
However, even though colemj's link claims it's an NMEA2000 device. That vendor claims it has spade connectors for Raymarine gauges. I suppose it's possible that I could just replace the end of the wire with an NMEA2000 connector and it would work?
Airmar isn't good at detailing the specifications of their products. They make the ST800 in about 10 different flavors but they are all the ST800. For sub $100 this one mentioned is definitely not an NMEA 2000 version but there are plenty of ST800 that are NMEA 2000. Here is one that is SeatalkNG (NMEA 2000)
and here is one that is analog
95% of the transducers available are 2".
Simrad and Furuno both sell the ST800 with the NMEA 2000 micro-c plug.