Quote Originally Posted by fisheye216 View Post
When I went to pick the transducer type from the Sonar-Installation menu on the Gen 3, there were several possible options, including " HDI M/H 9", which I assumed was for the HDS9 Gen 3. Called Lowrance and asked which to use for mine, which is a HDS12 Gen 3, and they said " HDI 83/200 455/800 KHz". Haven't tried it on the water so I can't confirm that it works.
I saw that also, they both appear to be working the difference may just be on chirp, I may try both next time on the water and try med and high chirp
let us know, im not going out again for a couple of weeks