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Author Topic: How deep to place a transducer in water  (Read 711 times)

Homewrecker

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How deep to place a transducer in water
« on: Mar 01, 2017, 06:49 AM »
Normally I take a back up sonar on long trips with me.
The back up one is just off my boat. Works really good on boat.
It is hit and miss on the ice . Some days really good some days not.
Transducer normally just sitting just in the water a few inches down just hanging under a 2x2.
Should not make a difference but would it work better if pushed down lower below the ice. Lorance Fish-marker

bearnoob

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Re: How deep to place a transducer in water
« Reply #1 on: Mar 01, 2017, 06:53 AM »
I'm certainly no expert, but I have always heard to put it even with our slightly below the ice at the bottom of the hole to reduce interference. Seems logical to me as the sound waves don't bounce around in the hole on the way to/from the tranny.

3300

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Re: How deep to place a transducer in water
« Reply #2 on: Mar 01, 2017, 07:48 AM »
it only needs to have the air removed from the bottom to work.

being high in the hole also helps reject others pings if others are fishing. like an added ir feature. keep it centered all the time tho. if you move it to the side, the side it's moved to will/can reduce the ping return and blind it on that side of the area.

being high also helps reduce tangles landing fish. this helps from cutting the cable too when no fishing string is yanking on it.

they can work on top of the ice too if you put some water on the ice first and if the ice is not full of air bubbles. this will at least let you see bottom.

Buckshots

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Re: How deep to place a transducer in water
« Reply #3 on: Mar 01, 2017, 07:57 AM »
it only needs to have the air removed from the bottom to work.

being high in the hole also helps reject others pings if others are fishing. like an added ir feature. keep it centered all the time tho. if you move it to the side, the side it's moved to will/can reduce the ping return and blind it on that side of the area.

being high also helps reduce tangles landing fish. this helps from cutting the cable too when no fishing string is yanking on it.

they can work on top of the ice too if you put some water on the ice first and if the ice is not full of air bubbles. this will at least let you see bottom.

^^x2  Sonar will shoot through clear ice like its water. No need to go below the ice. I know Marcum says to have it just under the water. I'm not sure what the other manufacturers recommend.

To the OP, drop it below the ice and see if it works better.

bee

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Re: How deep to place a transducer in water
« Reply #4 on: Mar 02, 2017, 01:05 PM »
^^x2  Sonar will shoot through clear ice like its water. No need to go below the ice.     I know Marcum says to have it just under the water. I'm not sure what the other manufacturers recommend.  My take is Marcum says that because their cords are cheap and get damaged when down the hole. If i have 2 feet of ice and the xducer is only a couple inches down how is it going to produce a cone.


To the OP, drop it below the ice and see if it works better.
Thats Why They Call It Fishing.

spoofhoundicefisher

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Re: How deep to place a transducer in water
« Reply #5 on: Mar 02, 2017, 10:22 PM »
use the vex all the time on first ice clear ice and it works like a dream.  will shoot right thru the ice and can locate fish without even drilling a hole.  great when on a really hot bite too not having to remove it from the hole all the time.  just have to have a little water around it.  have to be a little careful when it is really cold cause it can freeze to the ice but a little water from the hole will have it free in no time.

Homewrecker

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Re: How deep to place a transducer in water
« Reply #6 on: Mar 03, 2017, 06:12 AM »
What is happening ,there are days when everything is working great ,then the next day I go to same hole and I can not see my hook .

ripnflutter

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Re: How deep to place a transducer in water
« Reply #7 on: Mar 03, 2017, 07:56 AM »
sounds like your talking about the graph off your boat...? and you have rigged your open water transducer to use for ice fishing.? not sure what your using ( brand i mean ) if its old and is not compatible to use with an ice ducer than its likely not real time sonar. if its the old green box flasher from the 70s or early 80s then you get what you get. and in no way can have the same results as an lx7 or any other newer ice fishing flasher or graph. no matter where you have the transducer in the hole.

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Re: How deep to place a transducer in water
« Reply #8 on: Mar 03, 2017, 12:53 PM »
sounds like an aiming problem now. you asked how deep, but just removing water is all it needs to work correctly. boat transducers are for high speed and also use a much wider cone angle than ice transducers use. high speed transducers skim the water and are designed to be just barely in the water. if you read your manual it will tell you hot to adjust it on your transom so it is maybe a 1/2 inch under the transom or even with it.
you can use water proof double sided tape to hold one on it.

hanging it off of a 2x2 isn't aiming it. maybe try a bubble level on it next. hanging it like that means the ice shavings and any thing else will aim it wrong. use the bubble right on top of the transducer. keep only the bottom of it in the water. make a mount so it can be raised/lowered to match the ice. look into a pvc mount home made. maybe some clamps with wing nuts to adjust the height. you have to keep it all center balanced tho and the bubble level will let you know if it is.2


filetandrelease

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Re: How deep to place a transducer in water
« Reply #9 on: Mar 03, 2017, 01:03 PM »
If you have an old wooden tip up without the reel will work just snap tie it, or pvcpipe bolted together , I don't like messing around I just drill a second hole for my trans ducer then it stays put
     

Iceballs204

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Re: How deep to place a transducer in water
« Reply #10 on: Mar 13, 2017, 07:00 PM »
I put my ducer almost level with the bottom of the hole. The deepest hole I drilled this year was 37-39 in.  2/3 years ago I drilled about 52-54 in. I have a 7 ft ice ducer cord why not utilize it. If guys are getting nicks in their ducer cord pop a third hole for it   


maddogg

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Re: How deep to place a transducer in water
« Reply #11 on: Mar 14, 2017, 08:56 AM »
I just have the puck covered, works fine but I don't fish very deep.

Knife2sharp

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Re: How deep to place a transducer in water
« Reply #12 on: Mar 14, 2017, 03:28 PM »
There's a great online video put out by Vexilar that talks about cone shapes, as well as single and dual cones.  The cones are not perfect, which is why there may be times you don't see you bait. 

 

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