I'm trying to use a Helix 12 G2N MSI with a XM 9 20 MSI T transducer and an Airmar TM165HW transducer together by using a Y cable. I can get them both to work, but what should I be using for the connected transducer? If I don't have the proper SI transducer entered, the DI and SI don't work correctly and if I have the proper SI transducer selected, I can't enter the full frequency range of the Airmar transducer which is 150 to 250.
Can anybody please shed any light on what the solution may be?
Thank you.