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Posts: 4269
Location: Ashland WI | I have a Helix 9, and most of the time it reads the correct depth, but shows 2 bottoms on the screen.
If the depth is 20', it will say 20', but will also show another bottom at 40'.
I read a little about this, and it sounds like the sonar is reflecting and reading the signal again. Any idea what settings to adjust to stop this? |
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Posts: 866
Location: NE Ohio | sound about right on a hard bottom area of the lake if you have the bottom lock set to read that deep if your in shallower water. mine self adjusts into a shallower setting so i don't see 40' when i'm in only 20'. |
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Posts: 4269
Location: Ashland WI | That's not the case with mine. If I set it to auto, the bottom (false bottom showing twice the actual) adjusts to the deeper . The actual readout still shows the right depth though. |
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Posts: 670
Location: mercer wi | Is your transducer level. |
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Posts: 4269
Location: Ashland WI | upnortdave - 5/29/2018 5:49 PM
Is your transducer level.
Pretty sure.
The first year I used it, it didn't do the double bottom. I did use it for ice fishing that winter (I assume I changed something), the next year is when it started. |
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Posts: 546
Location: MN | There have been some instances of this in less than 20' of water and when you are over hard bottom. The unit is sensitive enough that it actually picks up the same echo twice because the return from a hard bottom is more direct and clear than one off mud or sand; thus resulting in it reading double the depth. Try adjusting the settings to those on the attached image.
These settings changes can be found in the SONAR menu tab on your HELIX unit.
Edited by mtcook16 5/30/2018 8:13 AM
(Double Depth Solution_small.jpg)
Attachments
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 Double Depth Solution_small.jpg (104KB - 396 downloads)
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Posts: 44
| Had the same issue.
hit menu twice
go to "Set up", make sure user mode is in advance
scroll back to "Sonar" on the menu
take the "Max depth" setting from auto to 50 feet
(saying you fish 30-40' max depth")
if you fish deeper then go more
this will make it max out at 50' not 1500'
Hope this helps
Ryan |
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Posts: 2687
Location: Hayward, WI | I would say it isn't a problem. All sonar units will do this if the bottom is hard enough and sensitivity is turned up high enough. It's sort of just one tool in reading sonar to tell how hard bottom is.
But if you don't want to see it adjusting the max depth range will make the 2nd reading go away. |
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Posts: 4269
Location: Ashland WI | curleytail - 5/31/2018 11:35 AM
I would say it isn't a problem. All sonar units will do this if the bottom is hard enough and sensitivity is turned up high enough. It's sort of just one tool in reading sonar to tell how hard bottom is.
But if you don't want to see it adjusting the max depth range will make the 2nd reading go away.
If I am sitting in one spot, it is not a problem to adjust the max range to make the reading go away.
Where it gets annoying is when I am fishing in areas where my depth is changing a lot. |
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Posts: 2687
Location: Hayward, WI | I guess what I meant is seeing a double bottom line shouldn't really be a problem. It's telling you that you're over a firm bottom. If you are seeing this consistently, is your sensitivity possibly turned up too high? |
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Posts: 1901
Location: MN | curleytail - 6/2/2018 8:09 PM
I guess what I meant is seeing a double bottom line shouldn't really be a problem. It's telling you that you're over a firm bottom. If you are seeing this consistently, is your sensitivity possibly turned up too high?
My sensitivity is set as low as it will go and I constantly have double bottom reading, whether I'm over firm bottom or mud |
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Posts: 4269
Location: Ashland WI | Propster - 6/2/2018 9:42 PM
curleytail - 6/2/2018 8:09 PM
I guess what I meant is seeing a double bottom line shouldn't really be a problem. It's telling you that you're over a firm bottom. If you are seeing this consistently, is your sensitivity possibly turned up too high?
My sensitivity is set as low as it will go and I constantly have double bottom reading, whether I'm over firm bottom or mud
Same here. I also don't want to turn the sensitivity down all the way. |
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Posts: 2687
Location: Hayward, WI | How about trying a different hz setting? I can never remember which is which but one setting would make your signal less strong.
A double reading doesn't really bother me but I don't think I constantly see it on either my bird 999 or 859. Didn't always see it on my old Lowrance 520c units either. |
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Posts: 4269
Location: Ashland WI | curleytail - 6/3/2018 9:14 AM
How about trying a different hz setting? I can never remember which is which but one setting would make your signal less strong.
A double reading doesn't really bother me but I don't think I constantly see it on either my bird 999 or 859. Didn't always see it on my old Lowrance 520c units either.
It's mostly annoying when I am trolling. Early spring trolling for salmon/trout, i zig zag across break lines a bit. When the depth is changing from 6' to 20' I can't just set the deep setting and leave it. |
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Posts: 2687
Location: Hayward, WI | I would try to change the hertz setting to see what that does for you. If you are getting this in 6 to 20 feet your unit has quite a bit of power at that depth. |
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Posts: 16632
Location: The desert | Is your software up to date? Have you called Humminbird? That's where I'd start. |
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Posts: 1901
Location: MN | I tried all three adjustments/settings mentioned above by MT and Ryan on my Helix 7 – surface clutter, transducer sensitivity, and max depth. None of those worked - still get double bottom reading. Any other suggestions? Otherwise will try to call HB one of these days |
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Posts: 4269
Location: Ashland WI | Propster - 6/24/2018 7:37 PM
I tried all three adjustments/settings mentioned above by MT and Ryan on my Helix 7 – surface clutter, transducer sensitivity, and max depth. None of those worked - still get double bottom reading. Any other suggestions? Otherwise will try to call HB one of these days
Let us know if you figure it out. |
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Posts: 921
| Propster - did you call HB? Because I am having the same issue and it drives me nuts. There's a reason I run both Lowrance and Humminbird in my boat because I know I can rely on my Lowrance after I get so frustrated I shut the Birds off !!! |
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Posts: 921
| mtcook16 - I tried your cut and paste screen shot fix above and it didn't work 
I've done enough research that it sounds like it's such a common problem most people just deal with it.
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Posts: 546
Location: MN | I suspect there will be a software update that will resolve this in the near future. It seems that they are just a tad sensitive to hard bottom, something that can be corrected via software. |
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Posts: 267
| I had the same issue with my Helix 10 G2N. |
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Posts: 921
| Eagle Weagle ... your solution worked perfectly. Tried it on LOTW last week and problem was solved.
Thanks! |
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