Quote Originally Posted by binfordw View Post
I have a gen 1 Helix 9 SI/GPS. The transducer my unit came with is a 200/83/455khz. Can I use the XHS 9 HDSI transducer to get 800khz frequency?
Absolutely ...

Change the Connected Transducer selection to "Hi-Def SideScan" to get the 800kHz frequency selection ...

Rickie