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#12287589 - 06/10/17 12:10 PM transducer question HB helix 9 si/gps
beeflover Offline

Registered: 01/01/05
Posts: 410
Loc: eagan, mn
I'm a weekend fisherman and want to upgrade my fishfinder a little. I'm thinking of the humminbird helix 9 si/gps. Does a thru hull transducer work?

Are most of you going with transom mounting or thru hull?


Edited by beeflover (06/10/17 05:13 PM)

#12288009 - 06/10/17 08:25 PM Re: transducer question HB helix 9 si/gps [Re: beeflover]
Ranger481 Offline

Registered: 10/17/16
Posts: 144
Loc: Seguin Texas
If your doing side or down imaging you have to use the transom mount that comes with the unit.

#12288038 - 06/10/17 08:55 PM Re: transducer question HB helix 9 si/gps [Re: beeflover]
44 Diesel Offline
TFF Celebrity

Registered: 12/25/12
Posts: 5297
Loc: Burleson,TX
It is a combination of both for some. Some boats will not allow for the SI transducer to read 2d depth at higher speed so a y cable is installed along with a 2d only transducer which may be a transom mount or shoot thru. That way you get SI Di at slower speeds when you need it for scanning but you will constantly get 2d readings from the 2d transducer whether shoot thru or transom mount version. It really depends on the boat to determine which install is best

#12288378 - 06/11/17 09:36 AM Re: transducer question HB helix 9 si/gps [Re: beeflover]
Buckshotbuddy Offline

Registered: 03/05/17
Posts: 262
Remember this if you buy one do not open the transducer package because you can trade it out for a high def transducer for a small fee.

#12288396 - 06/11/17 09:47 AM Re: transducer question HB helix 9 si/gps [Re: beeflover]
Wayne P. Offline
TFF Team Angler

Registered: 11/16/10
Posts: 4151
Loc: Charlottesville, Va
There is a thru-hull Side Imaging transducer. It takes a 1"+ hole through the hull for attachment and the transducer is on the exterior.
XPTH 9 HDSI 180 T is the model.
It is for slow non-planning hulls.
Some Ranger owners use it under the transom extension and pair it with a shoot-thru 2D transducer XP 9 20.

The trade-in for the HDSI transducer is about $85 including shipping. Then add the cost of shipping the included Compact SI transducer to Humminbird.
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, SOLIX 12 SI, 360, RC-1


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