Quote Originally Posted by SeaRay View Post
In the setup menu on the DF. The built in is probably a generic 85/200. You can find that on the Fortrex spec sheet.
I had been running DI on my Hook 7 so I had it set for 85/200&455/800 so I changed the setting to the plain 2D 85/200 and it seems to be fine now.
Believe you meant 83khz instead of 85. The US2 in TMs is a DualBeam 83/200khz transducer.