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Dec 30th, 2023
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 I can't get a depth when on plane! Help!!!!!!!
#7624370
06/08/12 09:49 PM
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Joined: Jan 2009
Posts: 951
Hunter's Dad
OP
Pro Angler
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OP
Pro Angler
Joined: Jan 2009
Posts: 951 |
We have a Humminbird 798si on our Champion 202. The transducer is a skimmer mounted externally. I lose reading as soon as I get on plane. Any suggestions?
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7624381
06/08/12 09:55 PM
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Joined: Jan 2009
Posts: 951
Hunter's Dad
OP
Pro Angler
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OP
Pro Angler
Joined: Jan 2009
Posts: 951 |
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7624796
06/08/12 11:45 PM
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Joined: Oct 2004
Posts: 658
C.
Pro Angler
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Pro Angler
Joined: Oct 2004
Posts: 658 |
Your transducer is coming out of the water when you go on plane. This is due to the setback from the bottom to the transom. To get a reading at spped, you must select a mounting location that will enable the transducer ti be in the water when on plane. Note: this is one reason a lot of folks use a "shoot-thru-hull" transducer mounting location.
C.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7625045
06/09/12 01:15 AM
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Joined: Nov 2010
Posts: 5,152
Wayne P.
TFF Celebrity
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TFF Celebrity
Joined: Nov 2010
Posts: 5,152 |
You should use a XP 9 20 shoot-thru tranducer for 2D readings. Connect the SI transducer and the shoot-thru to the display with the AS SIDB Y cable.
That dual transducer set-up is recommended for high performance fiberglass hulls.
The transducer that comes with the unit is the "Standard" for applications world wide. A high performance, stepped transom, bass boat is not a "Standard" craft.
Helix 12 CHIRP MEGA SI+ GPS G4N, SOLIX 10 G3, Helix 15 CHIRP MEGA SI+ GPS G4N,
Helix 8 CHIRP MEGA SI+ GPS G4N, SOLIX 12 G3, MEGA 360, MEGA LIVE TL , MEGA LIVE 2, Xplore 10
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7625451
06/09/12 03:35 AM
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Joined: Apr 2004
Posts: 1,780
whnigt
Extreme Angler
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Extreme Angler
Joined: Apr 2004
Posts: 1,780 |
I have a different depth finder than you and mine will do this some times. My sending must click or lock in place. If it comes unlocked it is at an angle and will not read. Make sure your transducer is level. By the pic it looks like your is at an angle.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7626213
06/09/12 03:28 PM
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Joined: May 2009
Posts: 328
Captain Chris
Angler
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Angler
Joined: May 2009
Posts: 328 |
Transducer installation damages and sounding troubleshooting comprise the majority of all marine electronics issues. Your transducer is purposely designed by its maker(when wired correctly) to sound at optimum when making direct, unobstracted contact with the water. Follow the "RULES" and use the right tools.
Safe boating...
Last edited by Captain Chris; 06/09/12 03:33 PM.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Captain Chris]
#7626663
06/09/12 07:09 PM
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Joined: Oct 2008
Posts: 1,142
rock crawler
Extreme Angler
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Extreme Angler
Joined: Oct 2008
Posts: 1,142 |
REMEMBER, FREEDOM ISN'T FREE. SO USE WHAT HAS BEEN GIVEN TO YOU RESPONSIBLY.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7635529
06/12/12 01:30 PM
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Joined: Jul 2009
Posts: 88
BIGGTXRODD
Outdoorsman
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Outdoorsman
Joined: Jul 2009
Posts: 88 |
I have a 798 also and was having the same problem. Transducer was not in the water while planing. I lowered it about 11/2" and that solved the problem for me.
"Many men go fishing all their lives without knowing that it is not the fish they are after"
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7635781
06/12/12 02:39 PM
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Joined: Sep 2006
Posts: 2,975
Doug Vahrenberg
Extreme Angler
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Extreme Angler
Joined: Sep 2006
Posts: 2,975 |
For a transducer to work on plane it has to be shooting thru clean unaerated and turbulence free water. So it will be a little below the bottom of the lowest point of the hull.
 Website: www.dougvahrenberg.comSponsored by: Skeeter, Yamaha, MinnKota, Humminbird, LakeMaster, Transducer Shield & Saver, LuckyCraft, Dobyns Rods, Daiwa, Dave's Custom Baits, Omega Custom Tackle, Browning Eyewear, Elite Tungsten Co., Angler Innovations, Massey Ferguson.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7639823
06/13/12 02:10 PM
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Joined: Jan 2003
Posts: 1,846
sasquatch
Extreme Angler
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Extreme Angler
Joined: Jan 2003
Posts: 1,846 |
The picture looks like it's tailed up. This will cavitate under the the transducer at speed. Make sure it is level with the hull.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7640636
06/13/12 05:03 PM
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Joined: May 2009
Posts: 328
Captain Chris
Angler
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Angler
Joined: May 2009
Posts: 328 |
We've looked for going on 40 years now for "clean unaerated turbulance free water" behind scores of boats...and have never found it. Kind of reminds me of a snipe hunt!
Last edited by Captain Chris; 06/14/12 12:44 AM.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7662522
06/18/12 11:33 PM
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Joined: Sep 2008
Posts: 101
WhatMeWorry
Outdoorsman
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Outdoorsman
Joined: Sep 2008
Posts: 101 |
Wayne P's recommendation above is the way to go. If you have your SI/DI transducer set correctly for optimum readings, it will be out of the water when you get on plane. The shoot thru transducer will give you on plane readings, and the Y cable makes it possible to use both transducers. And you don't have to worry about choosing the right one when you're on the water. The unit will select it for you, based on the view you have selected.
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: WhatMeWorry]
#7662586
06/18/12 11:48 PM
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Joined: Nov 2010
Posts: 5,152
Wayne P.
TFF Celebrity
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TFF Celebrity
Joined: Nov 2010
Posts: 5,152 |
Wayne P's recommendation above is the way to go. If you have your SI/DI transducer set correctly for optimum readings, it will be out of the water when you get on plane. The shoot thru transducer will give you on plane readings, and the Y cable makes it possible to use both transducers. And you don't have to worry about choosing the right one when you're on the water. The unit will select it for you, based on the view you have selected. The unit doesn't select anything and the operater doesn't either. The Y cable disconnects the 83/200 crystal in the SI transducer and connects the shoot-thru 83/200 transducer in its place. The unit only "sees" a single SI transducer all the time.
Helix 12 CHIRP MEGA SI+ GPS G4N, SOLIX 10 G3, Helix 15 CHIRP MEGA SI+ GPS G4N,
Helix 8 CHIRP MEGA SI+ GPS G4N, SOLIX 12 G3, MEGA 360, MEGA LIVE TL , MEGA LIVE 2, Xplore 10
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Re: I can't get a depth when on plane! Help!!!!!!!
[Re: Hunter's Dad]
#7662953
06/19/12 01:14 AM
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Joined: Sep 2006
Posts: 2,975
Doug Vahrenberg
Extreme Angler
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Extreme Angler
Joined: Sep 2006
Posts: 2,975 |
Here's a schematic that may help you better understand: 
Website: www.dougvahrenberg.comSponsored by: Skeeter, Yamaha, MinnKota, Humminbird, LakeMaster, Transducer Shield & Saver, LuckyCraft, Dobyns Rods, Daiwa, Dave's Custom Baits, Omega Custom Tackle, Browning Eyewear, Elite Tungsten Co., Angler Innovations, Massey Ferguson.
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