how do you get the unit to receive like the sample recording that came along with the unit. all I get is lines aross the screen
Product Details
The CUDA?? 250 S/Map makes finding fish and finding your way so simple, and at simply the lowest price found anywhere! In addition to packing a full list of fishfinding features into this compact case, this CUDA also squeezes in an internal GPS+WAAS antenna and high-detail mapping.