05-28-2008
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Last Grumpy Old Sailor
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Join Date: Jun 2007
Location: S.E. Michigan, USA
Posts: 2,592
Rep Power: 6
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Both my Raymarine ST60 (or is it a 60 Plus? - I can never recall) depth gauge and my Garmin 498C GPS/chartplotter/sonar use Airmar P79 in-hull transducers. But apparently they're not all equal. See: Ask JackRabbit: Airmar P79 Smart NMEA 0183 Depth Transducer
Good luck.
Jim
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s/v Abracadabra
1976 Pearson P30
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