Question about GPS
Check for corrosion around the transducer - or a broken/cracked wire.
You may be able to transmit and recieve short distances - but you are experiencing problems at greater distances.
There are no real limits to how deep the echo goes down and returns. The whole system depends on the transducer housing which contains a man-made crystal called a piezoelectric device. When it receives a signal from the unit it converts it into a mechanical sound wave that is sent down to the bottom below the boat. When this wave encounters an object it rebounds - creating an echo. This echo is bounced from the bottom and back to the transducer, where it's decoded and sent to the display unit as incoming signals.
These sound waves not only bounce from the bottom but from any object encountered between the transducer and the bottom. This includes fish, schools of bait, weeds and underwater structures.
This sounding process is continuous, even when the boat is moving. As the moving sound wave travels forward the signals of everything it encounters are sent back in amazingly clear pictures. Effectively you are seeing everything that's under the boat.
How quickly this echo signal process takes depends on wattage (power), the transducer and the depth of the water. The higher the wattage the more powerful and quicker the signal is processed from the transducer.
In actual practice the wattage is not really that important when fishing in shallow water, as little difference shows up between low and high wattage models.
Look into replacing the cable before replacing the transducer.
It sounds like it my be working properly - however the Lowrance isnt getting the right (clean) information back.
If the cable checks out good - a new transponder is in your future :D
Look into either a through the hull transducer or mount on a piece of wood epoxied to your hull for ease of changing it next time... transponders usually last 3 seasons in my experience.
Posted on Jul 26, 2009
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Posted on Jan 02, 2017
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