Topic: 899 c si hd

[Birdhunterden]

What transducer  will I need for the tm

[Humminbird_Greg]

That depends…
If you want to only use the 200/83kHz 2D sonar along with the 455kHz Si/Di sonar off the trolling motor then you need the XTM-9-Si-180-T Compact Side imaging (CSi) transducer.

If you want to use the 200/83kHz 2D sonar along with the 455kHz and 800kHz Si/Di sonar off the trolling motor then you need the XTM-9-HDSi-180-T High Definition Side Imaging  (HDSi) transducer.  The 455kHz si/Di sonar will be sharper than with the CSi transducer.

[Birdhunterden]

Thank you

[Humminbird_Greg]

If you have not already opened the transducer that comes with your 899ci HD Si unit: call the Humminbird Customer Resource folks and see about exchanging your new and unused transom mounted XNT-9-Si-180-T transducer for one of those I listed above.