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Discussion Starter #1
The fish finder on my Garmin 498 Chartplotter/fish finder sucks, or at least no matter how I try to calibrate it.

Any tips on how to tweak the various settings on this unit?

Range, gain and color gain are set at automatic.

Whiteline is set at 30.

Scroll speed.....I forgot the setting.

It has a dual frequency through hull transducer and I use the 200 kHz screen.

I cannot get the unit to show fish as sonar arches rather than fish.

Any recs on the fish finder settings from owners of the GPS Map 392/492/398/498 (or those who know how to tweak fish finder settings) would be appreciated.
 

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Discussion Starter #4
Any other suggestions or do you know of anyone who will properly tweak the fish finder settings for a fee?
 

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Discussion Starter #5
Mods..........why was my thread thrown into this low visited site while a question about a fish finder remains prominent in the highly visited Lake Erie General Discussion forum (where my post/thread was initially posted)?
 
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