Thread: removing info from depth finder

I'm confused about this corp lake map...(and your statement the Stockton corp lakemap was downloaded onto your unit)...

HB units will only read Navionics or Lakemaster map cards...and then the unit overlays the Navionics data on top of the preinstalled base map that comes in the unit....

The 1197 would have either Unimap or ContourXD base map preinstalled from HB..
The 798 would probably have Unimap or ContourXD (if it's a HD model) preinstalled from the factory...

Unimap is just basic lake outlines...ContourXD has contour lines for 3000 lakes ...but probably not any you fish ...so the base map for your lake is also probably just lake outlines...

Are you sure the fellow didn't just load the waypoints from the Stockton lake SD card...??

And then what you think is the corp lake map is actually the preinstalled base map that comes on the unit anyway...??

If the waypoints loaded successfully ...the map would be just a blank map with blue dots on it...

(Once we determine this...we will figure out the Navionics card issue)...

Rickie