So I got a replacement unit from the great folks at Marine General in Duluth. (my new favorite store by the way! ) after my last one filled with water..
This new unit is not displaying the speed over ground. The overlay is there and the gps has signal and the trails are working fine just no SOG. I have tried a reset, Turning WAAS on and off and configuring the overlay data and i just cant get it to work. Any suggestions out there? Thanks...
I'm looking to buy a HDS-7 insight usa but witch one the TM or the 140-12 the only difference I see is the transducer the 140-12 has the 83/200 and the TM has the 50/200. I looked on lowrance web site but couldn't get a real definite answer and maybe someone could help pick the right transducer or unit THANKS.
HDS 7 ???
) after my last one filled with water.. 
