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post #1 of 3 Old 10-31-2016 Thread Starter
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Transducer question

I recently bought a 1983 Gecco 39 that do not have any of the navigation electronic working (Danavigate 7000). I have a thru hull transducer mounted in the front of the keel and one in the back. I am assuming, one is for the depth and the other one for log. Is the depth transducer usually mounted in the front? They both have plastic cap that can be unscrewed and I was wondering if I can unscrew the cap without fear of water gushing in. I want to replace the depth transducer with one that has functionality of a fishfinder/bottom view along with depth. There is no marking on any of them as far as model of manufacture. Any help would be appreciated.
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post #2 of 3 Old 10-31-2016
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Re: Transducer question

caps can be removed....BUT water will rush in, there should be a plug for the device nearby that has matching threads or locking rings. Once you do this once and see what needs to be done, you should be fine....

New transducer may or may not fit your current hole or with the correct depth of the transducer in to the water. New transducers may or may not (likely not) work with old electronics or their wiring.

Make sure you have the cap or a plug or....else have her short hauled and do it in the slings. Not for the faint of heart.

Usually the speed is ahead of the keel so as to be in the water flow and more accurate. The depth needs as close to undisturbed water as practical as bubbles and such will distort the signals and readback.
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post #3 of 3 Old 10-31-2016 Thread Starter
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Re: Transducer question

Thanks kd3pc!!
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