When you are looking at a depth databox on the i70, is it showing zero or dashes? How is the i70 connected to the c97 and a65?
Zero.. The i70 is connected to the network by backbone seatalk ng
Is the depth available on the c97 fishfinder screen when it is showing zero on the i70? What is the software levels on both the c97 and the a65? They should be the same and the latest software is v7.43, and the i70 the latest is v1.25.