transducer hookup

[Gerald]

I have a boat manufactured in 1976 with a Bronze thru hull transducer. It looks like the one pictured here .........
http://www.iboats.com/Raymarine_Thru_Hull_Transducers/dm/cart_id.605840113--list_time.1222537695--session_id.436935911--view_id.220955
There are two wires that exit the transducer. I also have a Lowrance X25 fish finder with two wires that exit the unit that would normally be hooked to the transducer. Since I have no knowledge of what signal the fishfinder is looking for I am wondering if anyone here has experience with such things?
The boat is docked a few thousand miles away so it isn't a question of popping out the back door to hook it up for a try.
Gerald

[Ian McColgin]

I have one friend with the electronics skills - he makes his own testing equipment - to figure this out. It takes setting up a virtual lab on the boat to make it work and even then not all options can be made compatible. If you must ask this question, forget the premis and get a sounder and transducer. Beach the boat or haul if you must to replace the existing transducer with one that fits your readout.

G'luck

[Gerald]

Thanks Ian. Guess beaching the boat is an option. However, I have found it difficult in the past to get a 30 ton boat off the beach in the Atlantic. The closest place to haul is 600 nautical miles in the wrong direction. Even if someone tells me they think it might work I will take a backup system. We still have more than 6,000 kilometers to travel before we get this boat home.
Gerald

[herryjohn]

do somebody can work it??

[Ian McColgin]

If you've not the tide range to dry out to the transducer, then how about a lead line?

[Lew Barrett]

Aside. The reasons why the transducers from one system may not work with another, as Ian suggests above, are varied. Frequencies transmitted may be different. Levels are variable. Powering handling and available amplifier power may be different as well the way the receiver reads the transducer; sensitivities vary. A basic transducer is in essence, both a speaker and microphone, and the head end is a transmitter/receiver. A 50KHz unit will not work with a head end designed to see 200KHz, for example, no matter how carefully matched the rest of the system is.

One option would be to obtain a basic unit you like and get a transducer designed to transmit through the hull until such time as you can install the real deal, a through hull device.

[Gerald]

Thanks guys. I was able to dig up information about the Lowrance X25 and find out it accept frequencies of 50 or 200 so I might have a chance that it will work.Will take another unit just in case as well as a string with a lead weight as Ian suggested. I tried shooting thru the hull with another unit and couldn't get to read anything. Tried enough areas that I almost used an entire jar of hair jell. Ended up putting the transducer thru the cockpit drain. The boat draws 2.20 meters so knowing the depth of the water is important.
Thanks Gerald