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greg I just purchased a new 1198 to upgrade my 1197 i was wondering if the 1197 transduecer is the same as the 1198 if it is i will just leave the 1197 transduecer on the boat and keep new one for a spare.
also do all the 1198's have the led back light so it can be easier viewed in the sunlight
The only difference between the 2 will depend on how old your 1197 is. The difference is shielded transducer cable and I think right before 1198 came out is when the TD was changed to include shielding.
what is the advantage of the shielded transduecer is if for interference
yes
The additional shielding was in the housing of the transducer itself; the cable already had the added noise shielding. This was added to help protect it from trolling motor interference.
Yes, all of the 1198’s have the LED backlighting.