Likes: 0
Thanks: 0
HaHa: 0
Why don't you just set a preset button for DI screen only for the 998? Not sure what you are trying to do if you already have DI from the 998.
We sell a large selection of marine electronics... Humminbird, Lowrance, Garmin, Minn Kota and Motorguide products along with Boating and Fishing Accessories.
DJs Marine Electronics where quality and customer satisfaction are #1 423/290-5472
http://www.djs-marine.com
The 859ci HD DI model unit should be released about that time.
No guarantees here that you won’t get interference but try setting your 998 unit to the 800kHz Si frequency. The new 859ci HD DI unit will need to have the Beam Select menu set to the 455kHz setting and the Imaging Frequency menu set to the 455kHz setting as well.
I don't know if you will have enough room on your trolling motor for both transducers.