Old Transducer What to Do
- Thread starter cromano1024
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Hookup1
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That is a Airmar 744 transducer. You should have a label on the cable near the transducer or on the other end. Dual frequency 50/200. The center section is a paddle-wheel speed and temp sensor. It's a good all-around transducer. If you are deep water ocean fishing it's probably not choice.
Garmin chartplotters supports 12-pin transducer connection. Chartplotters ship with 8-pin to 12-pin adapter.
Garmin chartplotters supports 12-pin transducer connection. Chartplotters ship with 8-pin to 12-pin adapter.
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SkunkBoat
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Its a B744v as Hookup said. https://www.airmar.com/Catalog/Marine/Traditional-Frequency/Thru-hull/B744V
It is an old school "traditional" 600w CW 50/200khz. With an adapter, it will work with any brand new sonar. However, it will not support the CHIRP feature of new sonars.
It uses a 2" hole.
I think this model B765LH is a direct replacement into the 2" hole and uses the same size fairing https://www.airmar.com/Catalog/Marine/Chirp-ready/Thru-hull/B765LH
The other CHIRP choices use either a 1" hole or a 3.75" hole.
It is an old school "traditional" 600w CW 50/200khz. With an adapter, it will work with any brand new sonar. However, it will not support the CHIRP feature of new sonars.
It uses a 2" hole.
I think this model B765LH is a direct replacement into the 2" hole and uses the same size fairing https://www.airmar.com/Catalog/Marine/Chirp-ready/Thru-hull/B765LH
The other CHIRP choices use either a 1" hole or a 3.75" hole.
Harrysea
Well-Known Member
I have two Garmin 1243XSV chartplotters. One is connected to a Garmin GT56UHD transom mounted transducer, but the other reads bottom off my old Airmar thru hull transducer. I like having the Airmar as a backup and it still provides a good bottom picture and the same depth readings as the state of the art unit. It’s also more resilient to damage than a transom mounted transducer.