A128 Transducer Question

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Scott,

Q1. The current Airmar transducer could be swapped out for a chirp version B175? Which is a low profile but I want to know if I would get better performance from a B265 - 1 KW? In the future I may swap out the original airmar 20-degree location low profile for a side vision transducer.
A1. Your suggestion to use the MFD's internal CHIRP/DownVision fishfinder circuitry in conjunction with the CHIRP transducers specified is incorrect. The CHIRP transducers which you have referenced are designed for use with a CP470/CP570 CHIRP Sounder Module which may in turn be interfaced to any model of a/c/e/eS/gS-Series MFD. CP470/CP570 compatible CHIRP transducers may be found here. The transducer socket of an ax8 MFD, eSx8 MFD, or CP100 is exclusively designed to be mated to the fishfinder transducers found here and will support operation in depths up to 600'.

Q2. I assume in my studies for this swap that I do not need the DSM 300? If I do decide to add the side vision feature will I need some other type of sonar modular? CP-200?
A2. The DSM300 is indeed compatible with a/c/e/eS/gS-Series MFDs and you may want to consider using with the new system as an additional Fishfinder sounder source. Addition of SideVision to the system would require installation of a CP200 SideVision Sounder Module and CPT-200 transducer.