Thread: 998 hd si ?

Here are pix of the same structure using the 455 vs the 800..(all settings and enviromental conditions were identical except for frequency choice)...



The 455kHz beams cover a full 180° from the water's surface to "overlapping" a bit under the xducer..
The 800kHz beams cover 130° ...



The 455 will allow the image to be viewed all the way to the outer edges of the display ... But the overage image will be fuzzier...
The 800 will be darker out to the sides of the display...But will have better detailed definition of the area closer to the boat ...

The 455 is good for seeing (and marking) structure/suspended fish out to the sides...(because the image will be brighter out to the edge of the display)...
The 800 is good for repositioning the boat closer to the structure to see the targets in better detail...

Rickie