Reply With Quote800 99% of the time, it will give the best picture. 455 when in really shallow water (sub 6') or really deep water (50+) as it has more power but less quality.
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Crappie.com 3K Star General
455 or 800 kHz ???
I am running an older G1 Helix 10 SI and probably will be for quite some time and I'm still working on learning how to get the best out of it.
What are the determining factors for knowing the "When, Where and Why" for choosing between 455 or 800 kHz.
And do the answers apply equally to both DI and SI?
Crappie.com 1K Star General
800 99% of the time, it will give the best picture. 455 when in really shallow water (sub 6') or really deep water (50+) as it has more power but less quality.
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Slabmaster II
I still am not even average at reading the graphs yet. But should be as much as I fish ! But I read a lot about crappie fishing. Mostly what I read is when scanning to use the 455 because beam width is wider and u are just looking for brush piles or what ever. Then when see something u want to check out better go to 800 to see detail etc
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800kHz until I've maxed out SI Sensitivity and still can't get the SI screen bright enough to see what I'm focused on ...
(deeper water and softer bottom darken the SI image)
Rickie
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Slabmaster II
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when using 800 KHz set the distance to 50 ft or less and it will improve the picture and then set the screen scolling speed higher and the sensitivity up. Adjust contrast and sharpness as needed.
I was looking for a PVC crappie tree that I played around the launch ramp and I knew where it was but was having a hard time seeing it until I adjusted the distance to a shorter number and increase the sensitivity and then increase the scroll speed and went to 800Khz. Then I finally got a good screen shot of the PVC Stealth crappie tree. Yes it was a Stealth PVC crappie tree as the sound waves wrapped around the round part of the PVC Pipe and didn't return back to the transducer very well.
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Originally Posted by Lonnie84
