if I want to only scan the water and not the bottom?
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if I want to only scan the water and not the bottom?
Set SI Range to the water depth...Quote:
Originally Posted by brettw
Rickie
Set SI Range to the digital readout water depth...Quote:
Originally Posted by brettw
(It may be called something else in Lowrance)...
Rickie
thinking of suspended crappie in the winter
Also set the image frequency to 455kHz...(I think I read the total coverage of the Lowrance 455kHz is about 130° side to side)...Quote:
Originally Posted by brettw
The image may have a little less detail than the 800kHz beam but the wider beam shape of the 455kHz will reach more of the suspended fish out to the sides towards the surface...
Just remember that setting the SI Range to the water depth also limits how far out to the sides the display will show echoes...
For example...: in 20' of water depth....Setting SI Range to 20' left and right will only display echo returns from 20' left and right....
In this same 20' of water depth....if there are suspended fish 30' out to the sides of the boat...the SI Range must be set to farther out than 30' for the display to show those fish...in which some of the bottom would have to show on the display...
What this means is...there is no way to show suspended fish (on the display) that are physically farther out to the sides than a "SI Range" setting of a value equal to (or less than) the water depth...and not show some of the bottom on the display (in any brand)...
Rickie
I don't like my own wording in blue above...Quote:
Originally Posted by rnvinc
I should have said...
There is no way to display suspended fish without the bottom showing ...when the fish reside at a distance farther away from the xducer than "a value of equal to or less than the digital water depth"...
(I don't like that wording either but I think it is more correct)...
Rickie
Your way over my head here .Does side imaging need the bottom to show us the shadows of suspended fish?
Yes, SI must have pic of bottom in order to show shadow, like a light shinning on a pole the shadow is behind it but you only see it is when shadow touches a object or bottom or something the shadow can leave us a pic
so, you can't limit the depth, and then go much wider on the side image,
,30 ft of water, depth set at 25, si set at 80, for example
Correct...Quote:
Originally Posted by brettw
If the water depth is 30 (in your example)...there is no way to set the SI Range out farther than 30' without some of the bottom showing in the SI image...
Rickie
Brettw,sure would be nice if you could though
no joke, the bottom makes it super hard to pick out suspended fish that are not directly under the boat
Try different palletes...fish echoes contrast against some Pallete colors better than others...Quote:
Originally Posted by brettw
Rickie
Ricky- Sent you the transducer, should get it Friday or Saturday. Went today and after a while DI didn't work. This means that transducer sent to you could be GOOD. Called Lowrance and was told that maybe the newest software would fix the problem (sounds like a snow job). I did a factory reset and did everything that I knew how to do.I didn't want to interject on this post , but thought someone had some ideas.When I switched to the HST-WSBL on the back the depth jumped around and I found the TD was not level.Paid to much money to have to go through this.....crappie1133Quote:
Originally Posted by rnvinc