Quote Originally Posted by uaagr View Post
Can you upgrade the transducer on the Helix 7si?
Quote Originally Posted by criddy View Post
Yes you can, not sure if it would support the 800htz hut would make the image slightly better. It is not going to be as noticeable on the smaller screen but I think you'd see a difference.

The HELIX 5 and 7 can also use the XHS 9 HDSI 180 T to get somewhat better SI images because of the longer piezoes in the XHS 9 HDSI 180 T ...

The HELIX 5 and 7 cannot use the additional 800kHz SI frequency capability of the XHS 9 HDSI 180 T ...their SI transmitters will only do 455kHz ...

Rickie