If I’m reading the info right the Helix 5 and 7 sonar G2, chirp, gps units only supply conventional sonar in the 200 and 455 khz. range with the supplied transducer. That’s like maybe 5 ft. of bottom at a 20 ft. depth on a 20 degree beam? Why can you get 83-200khz conventional sonar with si units but not di? (83 khz at 60 degrees should show 20 ft. of bottom at 20 ft.) I’m unable to find a transducer for those units that does 83 khz.
I have a unit unopened in a box and was getting another but looking at this it may not be what I want.
I have a unit unopened in a box and was getting another but looking at this it may not be what I want.