SOURCE: Garmen 240 fishfinder
A test bucket wont work, A 200 khz transducer will generally not work in anything less than 2' of water, due to surface clutter. If the transducer is working, you should hear it make a ticking sound.
When you got the 17000 foot reading was your range set to auto?
How is the transducer situated on the boat? Sometimes turbulence and bubbles from the hull can cause erroneous readings, including unrealistic depths, or no depth at all. Stop the boat and turn off the engin e and anything electrical to see if problem repeats itself. If it only crops up when the boat is moving then it is most likely the transducer location.
SOURCE: Garmin Fishfinder 160 will not display bottom
Change your setting from saltwater to fresh water even if you fish in sea water,your transducer is a 00/200KHZ and not a 50/200KHZ.
Good luck
Willem
SOURCE: Mounting a transducer on a canoe
I used a suction cup with a bracket to attach the transducer.The suction cup is attached to a rope and when landing just pull.
SOURCE: my fishfinder will not continue
Hello. Your observation is spot on and it is actually a characteristic that is always true when using sonar. Yes, your Lowrance uses the same sonar as a nuclear powered submarine does. The two factors you focus on, water depth and boat speed are perhaps, the two biggest factors when it comes to the quality of the fishfinder. The boat's engine should be in gear at an idle or just above. Experiment with your boat to find the best throttle location for good arches. Usually, a slow trolling speed works best. The depth of the fish can determine if the fish will arch on the screen. If the fish is in shallow water, the fish is not in the cone angle very long, making it difficult to show an arch. Typically, the deeper the fish, the easier it is to show an arch.
If you would like a complete tutorial on Lowrance sonar, go to this link. Enjoy. http://www.lowrance.com/Support/Tips-and-Tutorials/Sonar-Tutorial/
SOURCE: Is Garmin Fishfinder 90 working?
possibly.most ive owned will flash random numbers when out of the water.the fact its flashing or reading numbers at all,means its working.youll have put it in water to see how accurate,obviously
If you use the fuse block on the boat, route the positive connection
through the fuse
Connect the black (- or ground) wire to the negative voltage terminal.
Install or check the 3A fuse (on the fuse block or in the in-line holder).
Align the notches on the cable plug and on the back of the Fishfinder 300C. Insert the cable into the connector, and turn the locking ring
counter-clockwise until it stops.
If htese all are correct and voltage is there at the tranducer end, the tranducer is faulty, and should be replaced. OK
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