HB Transducer Mounting Question.

I have been studying as I am getting ready for an install but figure it is simpler to just ask the experts here. Got an 898c SI also bought the XNT 9-20-T as recommended by HB for my high speed transducer as well as the splitter AS Sibd Y as well as the interlink to link to my new 858c DI i have coming. This is my first SI unit. I got a Lowe ST195 also have a mounting plate from Cabelas. It is my understanding that the XNT 9-20-t should be a little lower than the SI tranducer? How would you guys mount these? 1 on each side of the motor or could both be mounted on the same 12 inch plate as supposedly the 9-20 will only kick in at high speeds. Any thoughts are greatly appreciated. I could post a pic of the back of the boat if you like.

Attachment 80216

depends on which way the prop turns on which side you mount transducer to limit interference. clockwise from this position on prop rotation transducer goes on the left counterclockwise prop rotation transducer goes on right side i believe thats the way owners manual on my 898 read

First off I would see if I could send back the InterLink for an Ethernet Connection cable. The InterLink is more limited in what data can be shared or transferred across it versus the Ethernet connection. It also costs more.

You need to try and mount the transducers as far apart as you can so that the XNT-9-20-T transducer will be blocking less of the Si sonar. The farther away the better so that means on opposite sides of the motor. Hard to say where to mount the transducers as we cannot see the underside of the hull so we know where the strakes and rivets or other hull protrusions are at. It is best not to mount the transducers behind these. Maybe someone with the same boat will chip in and show where their transducer(s) are mounted.

When you use the AS-Si-DB-Y cable, the 2D sonar always comes from your XNT-9-20-T transducer. There is no automatic or manual kick in of one transducer versus the other.

Thanks for the reply Greg, the running board are
each centered between a 2 ribs other than that just
1 in the cente. I wish when I HB called that they would
have told me ethernet instead of interlink would be more
bang for my buck. Whats the pros and cons of 1 over the
other? As i have everything here but the 858c DI but it
is in route.

InterLink
Pros: Allows waypoints and routes to be shared between units. This same information is stored on the InterLink as well. Can share WeatherSense accessory data. Can share GPS Receiver data from up to five sources.
Cons: more costly (~ $130). Waypoint/Route storage is limited by either the InterLink or the storage capacity of the unit that has the least waypoint/route storage capacity. No expandability.

Ethernet
Pros: Cost is less an InterLink ($35 and up). Waypoint/Route storage is limited to the storage capacity of both units together as this information is only stored on the unit the waypoint/route was made on. Water Temperature and GPS Receiver data from up to four sources can be shared between the units. Allows sonar data to be shared between units. The high-speed connection between units allows for more future expandability possibilities. This includes more than a two unit connection.
Cons: Does not store a copy of the waypoints or routes. Cannot share WeatherSense data between units.

Thanks for the input Greg, how about position anyone?
As stated above, the runnin boards split the strakes, thus
i assume right there? Or closer to the motor past the strake that
is on the motor side of the runnin board if there is room? I plan on 1
transducer on each side of the motor.

Typically the deeper in the water you can get a transducer on an aluminum boat the better it will work at faster boat speeds. So I would start with mounting the XNT-9-20-T transducer just to the left of the right side running board or maybe even a few inches closer to the motor than that.

The HDSi transducer will need to go on the opposite side of the motor and the farther away from the XNT-9-20-T transducer the better so that it will not block as much of the right side Si sonar signal. Be mindful that it still needs to be below the level of the motor mount though. Looks like you will have to trim the motor upwards when using the Si sonar of the 898c Si unit so that it will not block any of the right Si sonar. Hard to tell from the one photo where the best location would be.