Thread: 899 si ???

Originally Posted by toomanycasts

No it comes with a combo si and di, but you have to have a dual beam high speed transducer for your traditional 2d sonar. The di/si trans. Only works up to 7 mph. You will also need the y cable to hook them both up.

The transducer does include the 2d crystal.......It has left and right SI and 2d. The DI is derived from SI.

The transducer is capable of getting 2d readings at high speed. The only limitation is the transom and hull type and the installation. Some have reported good readings at 50-60MPH. The transducer just needs turbulent free water to operate at high speeds.

The 899 can use the HDSI transducer and Humminbird will upgrade as detailed by Rickie.

Thanks, that is what I was looking for

Rob