MFD does it see ducer

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Kingfisher,

Based upon the information printed on the transducer's tag, it is a Raymarine B744V transducer, but does not appear to be a B744V which Airmar had designed for use with Raymarine fishfinding products. Per Airmar's transducer Cross Reference, it appears that it is a version of the B744V which was designed for use with Furuno or JRC fishfinding equipment rather than for use with Raymarine fishfinders. You may want to consider contacting Gemeco, Inc. (Airmar’s US distributor (803 693 0777)), as the -4 variant of the transducer is not listed within the aforementioned cross reference. You may also want to consider sending the MFD to Raymarine’s Product Repair Center to be benchchecked with a compatible transducer to verify that its internal fishfinder circuity is operational.