Fish finder goes out of range after 7knots

 Hi lads 

I have a fish finder issue, when ever tinnie goes over say 7 knots the finder (can't remember brand) goes out of range and will read 100-200m, not sure if anyone has encountered this same issue but any tips would be helpful!

cheers


sandbar's picture

Posts: 704

Date Joined: 25/10/09

Placement

Tue, 2015-07-07 09:20

of the transducer. You will have to move it to a different spot that gets the best reading.

Goodluck

RobertMc's picture

Posts: 326

Date Joined: 19/01/09

 Probably need a bit more

Tue, 2015-07-07 09:40

 Probably need a bit more info champ, make, model, of your sounder and transducer, photos of your boat/ transducer placement, how long it's been happening.

scottnofish's picture

Posts: 1617

Date Joined: 28/08/07

use manual range

Tue, 2015-07-07 12:37

 Not auto will help

DTrain's picture

Posts: 486

Date Joined: 10/02/12

As sandbar said it's probably

Tue, 2015-07-07 13:54

As sandbar said it's probably your transducer placement. Usually caused by air getting underneath the tansducer. The tranducer could either be too high or it could be behind a strake on your hull which is causing turbulence. The transducer should be sitting flush with the bottom of the transom, or a little bit lower.

 

Posts: 33

Date Joined: 03/06/12

 Cheers lads thanks for your

Thu, 2015-07-09 13:23

 Cheers lads thanks for your help,

I'll let u know how I get on 

Posts: 121

Date Joined: 05/05/14

same issue

Mon, 2015-07-13 18:05

i have  raymarine dragonfly sounder on a trophy 2002

it works within about 6 meters of water then once i either go deeper or faster it cuts out?

then when i slow down it doesnt work again?

it sucks :( 

Jetpower's picture

Posts: 83

Date Joined: 09/06/15

Transducers

Mon, 2015-08-03 20:54

would put my money on the transducer being positioned incorrectly.  Even if the unit is clear of the rear strakes, check that there arn't any forward lifting strakes that finish well before the the stern, but are in line with the transducer.  Also check that the transducer isn't too close to the prop (also what side is the unit mounted??)

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