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Catalina 25 Specific Forum

uniden depth sounders on sale and a question

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dave holtgrave
Captain

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USA
427 Posts

Initially Posted - 04/18/2005 : 10:17:17

i noticed that boaters world have the uniden "in hull" sounders on sale for $100.

i would like one. i have read several past forums about where to put the "in hull".
yesterday,i looked under the front V berth and i'm wandering if the hull just inside the teak door is of solid core? i believe it is flat enough. as i felt down the hull about half way down it was thicker and i'm wandering if it is acceptable to mount the transducer their?
uniden recommends a soild hull without air space. buy the way i am a swinger, 1988.

i don't really want to cut the cabin sole and put a screw port cover in.

let me know what you think.

boaters world again has it for $100 no tax or shipping costs

thanks
dave holtgrave
5722 sk/tr
6 days to splash at carlyle lake in southern illinois

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Lightnup
Master Marine Consultant

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USA
1016 Posts

Response Posted - 04/18/2005 : 11:47:08

ChrisDara had a brand new one for sale and was seeking offers just a couple weeks ago.

http://www.catalina25-250.org/forum/topic.asp?TOPIC_ID=8693

Steve

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ChrisDara
1st Mate

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USA
88 Posts

Response Posted - 04/20/2005 : 00:03:29

Still for sale.
Email me if you're interested. It's brand new.

Thanks for the advertising Steve.

Edited by - ChrisDara on 04/20/2005 00:07:33

John V.
Admiral

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USA
559 Posts

Response Posted - 04/20/2005 : 06:53:29

Dave, I have the puck epoxied there in front of the forward bulkhead and have good results with a good clear picture of the bottom. Though the hull is rather thick, there is no core there and the transponder should work fine.

I too was quite a swinger in the eighties but then I settled down.

good luck

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gracer
1st Mate

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USA
39 Posts

Response Posted - 04/20/2005 : 07:53:54

I installed mine last summer under the quarter berth. I tested mine under the V-berth as suggested by this forum, but could not get a good reading. I had great results last summer. My Uniden only goes to 200 feet. It blinks when the water is over 200. I spent only $100 and it works great. Expect to get in the water again this weekend

Bob

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Leon Sisson
Master Marine Consultant

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USA
1893 Posts

Response Posted - 04/20/2005 : 10:25:21

Dave H.<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">...where to put the "in hull" ... under the front V berth ... wandering if the hull ... is of solid core? ..wandering if it is acceptable to mount the transducer their? uniden recommends a soild hull without air space.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">As Uniden said, it's essential that the hull be solid between the in-hull transducer and the outside water. Catalina 25 hulls are not cored, but due to production techniques, there can be minor air voids in the layup almost anywhere. It is suggested that one test the hull for 'transparency' before permanently installing the transducer. I did this by pouring a puddle of water in the bottom of the V-berth locker, setting the transducer in it (right side up!

), jury-rigging the fishfiner wiring, and motoring around in an area where I already knew the depth and bottom profile. Other test techniques I've heard of include holding the transducer against a zipper baggie of water to get good contact with the hull, or temporarily sticking it in place with a wad of peanutbutter (be sure to clean that mess up thoroughly!).

The manufacturer of my unit specifically said not to use silicone sealant to mount the in-hull transducer, because that would absorb too much of the acustic(sp?) energy, and thus greatly reduce the signal strength. The folks who have used epoxy to glue the transducer down seem satisfied with that method. I built a water-tight housing out of PVC pipe, mounted the transducer inside, and poured distilled water around it. Every year or so, I check the water level, and top up as required.

My fishfinder with transom-mount style transducer was advetised as 800' range. With the shoot-thru-hull installation described above, the effective range is a little over 500' in saltwater. Good enough for my purposes!

-- Leon Sisson

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The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.