Old Transducer What to Do

[cromano1024]

I have a 1999 Grady White 272. It has an old thru hull transducer with 8 pin 10 if you count 2 in middle connection. Appears to be original.
Will this unit work for Garmin? Raymarine? Replace?

I believe it’s a b44v?

 

[Hookup1]

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.

 

[SkunkBoat]

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.

 

[Harrysea]

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.