Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
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.
Tom, You mean the instruments don't have any names on them? Maybe because of quality issues they didn't want anyone to know who made them? Have you narrowed it down to the instruments as opposed to the wiring? You could send an e-mail to the Catalina parts department (see the Catalina website for the address.) If Catalina can't help you, look at SR Instruments. We've had good luck with their products - no frills and more economical. BTW, many are replacing knotmeters with the speed function on GPSs.
It all depends on the year they were made. Who made them and if they aare original. If they are original and from early 80's I dont think you will find any new replacements. You will find similar looking new type of replacements. BIG question is are you ready to spend that much. Sending units and gages can be several hundred dollars. If you like to keep it simple and in budget switch to a good fish finder. Take the extra saved and get a GPS. It wont give you speed through the water but will give you lots more info. Speed over the bottom, MOB function, Anchor alarm (drag), not to mention weigh points and navigation, tide info on some and sunset at destination, how long in route on and on and on. All this for less than the price of a good transducer for a knot meter. I used a Garmin fish finder and a Garmin GPS.
Doug: I'm interested in how you set up the fishfinder and how it works for you. Where is the sounder mounted, and where did you put the display? Can it see forward at all, and is the keel an issue. How is the battery draw?
My old depth sounder is shaky--probably because the DPO put unknown coats of paint on the transducer. I got most of it off, but have about given up on it. The fishfinder has a lot of appeal--including letting me close another hole in the bottom.
Thanks!
Dave Bristle - 1985 C-25 #5032 SR-FK-Dinette-Honda "Passage" in SW CT
Dave: I replaced the old depth transducer with the new unit from the Garmin fish finder. I used the same hole and did it this spring when I did the epoxy bottom. The transducer is in the bottom of the hull below the galley sink. Its no problem for the keel because its just aft of it. It does not look forward but it gives great depth readings, shows fish and size, You can tell bottom composition = Mud or rock, it has a selectable depth alarm. If I were starting new I would rather have one of these than just a meter. I havent had a chance to hard mount her yet. I was looking at doing a swing out deal in the companyon way.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. 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.