Question about Eagle Cuda 242 Fishfinder

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I have a new unit to fit. Can the transducer be mounted inside the hull? It currently gives me strange readings whether inside or out but we are on dry land - if that makes a difference

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There are two kinds or transducers out there on the market --- some that can be mounted inside the hull and others that need to be mounted on the outside of the hull, the instruction manual should indicate which transducer you have. AND YES the transducer will only work when you are on the water --- the readings on land are no good and it will not work. install it on the boat and then test the unit on the water. BUT if you do want to test the unit before you install it to the boat you can always take the boat out to a lake ( or wherever ' on the water ' ) and mount the transducer to a long dowel or stick and hang it over the edge of the boat and this will work fine for testing.
' fish on and have fun '

c...

Posted on Dec 31, 2010

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Posted on Jan 02, 2017

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1 Answer

What can i do to stop the flashing of the depth finder at times it will not show the current depth


Hey Joe,
Wow.. where to start.. there are so many things that will cause the issue you are describing.What type of electronics do you have? Does this happen at all speeds? Where is the transducer mounted? I need more info about when it stops reading.
1.Wrong setting on the unit
2 Bad transducer
3 Bad transducer mounting (either inside the hull or outside the hull.)
4. (In hull) Turbulence going under the boat (mine quits reading at about 55 mph @ half trim...the boat is lifting so much it causes air pockets so the transducer loses contact with the water)
5. (Outside hull) Turbulence around the bottom of the boat where the transducer meets the water.
Good luck,, when you get the info.. reply to me..

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Hey Anon
The transducer installation is more important than anything.. next to correct wiring! You must make sure the mounting is good,,, if its outside the hull, make sure its sitting 1/16th below the hull with no obstructions.. if its inside the hull, the medium you used to fix the puck to the hull must be porosity free and the puck sitting as level with the WATER as possible..
Now, take the manual to the lake with you and DO NOTHING but read the manual and apply what you read to the unit,,, read -repeat - read-repeat.. forget about fishing... now read-repeat and learn... IF nothing seems to be reading correctly.. its probably the transducer installation.. YOU DID use a/the transducer specifically for this unit!!

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Raymarine ds500x brand new works good but will give false bottom readings occasionally corrects itself fairly quickly 30 seconds to two minutes wondering why it does this and how to correct it


If the transducer is not correctly mounted this may happen due to air, etc. If the unit never gives a depth reading that looks like dashes
( - - ) then there is likely nothing wrong with it aside from the transducer placement.

Aug 06, 2009 | Raymarine Ds500x Color Fishfinder: Ds500x...

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Hi I have an Apelco 530 fishfinder/gps and need a through hull transducer kit. Apelco were taken out by Raymarine who advised me to contact Airmar who made the transducers. So far no answer but their...


Embedded

I was looking to see if I could find a replacement for the display and was able to confirm that the transducer is a single beam 120khz unit so I doubt that you've find a replacement for it ..as is .

The Airmar C-49 is the proper number for the connection line but like me I think your going to have to think about a whole new unit and or system . Been there already.

Best of luck.

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1 Answer

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jmiller,

Sound like your getting turbulence from the hull or your angle is allowing cavitation under the transducer. Look under the hull where the traducer is mounted and look for a part that has no obstruction including saltwater pickups, hull relieves, etc. The other thing to check is to take a strait edge on the bottom of the transducer to ensure the angle is slightly forward than the hull.

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2 Answers

Depth finder problem


The problem is not so much the flat bottom, although they are prone to this problem. The way the sonic waves have to travel through the water is affected by turbulence, especially by air bubbles and cavitation, and by the transducer actually leaving the water, which happens frequently on flat bottomed boats. The best solution to this is to have the unit mounted through the hull so it is completely flush with the hull surface - often they are mounted with a surface flange on the outside of the hull which although thin still causes cavitation around the transducer at higher speeds. about 14 knots will usually interfere with the accuracy of the readings on most hull shapes - forward looking sonars perform usually better. Another thing to check is that the transducer is actually seating right in the housing, if it is not flush with the flange then you have problems - even half a millimetre is too much. check no muppet has painted the transducer with antifouling paint - that never helps, also check if there is a build up of marine growth on or near the transducer - a smooth hull will always keep your depth working until a higher boat speed. if the transducer is growing stuff itself then gently scrape it off - be really careful not to scratch the surface. There are now available non-sonic depth sounders, especially ulf radio signal devices, but I have heard no good reports about them, last i saw they were very expensive and maybe they experience other problems at high speed. there also have been towed devices available that may suit your needs better, although probably a lot of trouble in shallow waters. If you can borrow a waterproof video camera, you could mount it behind (not too close) the transducer, this would be a pain to do, but it may give you an insight into what part of the hull if any is causing the problem (tie the camera to the top of the boat securely in case the mount fails) Hope this helps, sorry but your dealer is not totally wrong :)

Sep 25, 2006 | Lowrance M68C GPS Receiver

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