02 25' Baja Outlaw----just replaced my old Lowrance 350 GPS/Sonar and my old Lowrance 3500 in dash depth finder, both w/ shoot thru hull transducers...Both worked fine until the last year.......Installed a new Lowrance HDS-7 GPS/Sonar and a Lowrance IST-3800 in dash depth finder....Have not used them yet as I'm putting in a new engine....HOWEVER I just learned that I cannot use both Lowrance units at the same time as the transducers are on the same frequency and will cross over to each other..
Upon writing to Lowrance, I was told that had I purchased their "High-end" items, they have a adapter where you can use 1 transducer and connect to 2 units...My "low-end" items have no adapter---Do your home work better than I did-------
Thanks Mike---Tampa Bay------