Thread: Garmin images

I cannot imagine why TVG has beneficial merit in shallow water situations (meaning I don't understand why the brands even input it in shallow water situations) ...

TVG was designed such that deep water targets (think ocean depths) were not painted as 1/4" long fish arcs while the same size target at 100ft we're painted as 1" long fish arcs ...

Now, what is not clear (even in my mind) is that the brands may be using the TVG technology (originally designed for deep water scenarios) in these shallow water scenarios for a result not even related to actual target echoes... But maybe as a filter of some kind for environmental anomalies ...

There are discussions in other forums describing the HB Surface Clutter setting being a sort of TVG technology ...

Rickie