hummingbird transducer

[ranger7717]

looking for transducer for 898 c si finder ....my questions are , 1. does it have to be a hd transducer to work with side imaging and will another model work  ? and 2. is the trolling motor transducer function the same as the transom mount with just a different bracket ?

[Wayne P.]

For the core and Helix models there are two sizes of Humminbird Side Imaging transducers: Compact SI that is 4" long and HDSI that is 6" long.

The Compact SI transducer is standard for all SI models with 5" or less displays. It is also standard for the Helix 5, Helix 7, Helix 9, and 899

The HDSI transducer is standard for all the larger display models and both 898's. It is tuned for both 455 kHz and 800 kHz Imaging. The transom version is the XHS 9 HDSI 180 T and the trolling motor version is the XTM 9 HDSI 180 T. They are the same, just the included mount is different. There is also a thru-hull version XPTH 9 HDSI 180 T.

There are two versions of the Compact SI transducer. One is the transom mount XNT 9 SI 180 T and the other is a trolling motor PUCK XTM 9 SI 180 T. The PUCK has extra internal shielding for trolling motor use

Both transducers have the same number is sonar crystals and the same number of electrical circuits. Both will "work" with any core or Helix Side Imaging unit. Most knowledgeable owners exchange the Compact SI transducer for the HDSI to get shaper images no matter which model comes with the Compact SI transducer.

Side Imaging works the same no matter where the transducer is located. I use a Side Imaging transducer on my bow trolling motor and have done so since I got the first Side Imaging unit.

If you want to degrade the performance of your 898c SI, you can use the Compact SI transducer.

[ranger7717]

thank you Wayne....i've read about the image quality, just didn't know how much of a difference there was

[Wayne P.]

I'll send you a link to the comparison test I did

[ranger7717]

2 hours ago, Wayne P. said:

I'll send you a link to the comparison test I did

definitely a difference...worth the extra$, which really isn't a ton to begin with - just easier to find a bargain on the lesser part. .I appreciate your effort in helping me out....