Lowrance HDS Touch Model 7, 9 and 12 Sonar Settings On October 24, 2013
Freshwater Settings to use as a starting point
Sonar Menu on left
View Choices center
Advanced choices on right
The most common freshwater transducer is the 83/200 kHz, when you select this you will not have the choice for 50 kHz as a menu selection since it doesn't work with the 83/200 transducer. Generic works the same as selecting the exact transducer for sonar images.