- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Im not familiar with your particular unit but you should be using a low frequency transducer for water over 500'; something like a 50 kHz transducer or a dual frequency transducer like a 50/200kHz for detail with the high freq. but increased depth range on the lower frequency. As far as setting it to 250 ft, you should be able to use the range feature and adjust the maximum to 250'. typically the factory default is automatic so it will caonstantly adjust the range based on the maximum current depth.
Try going into the menu and restoing the defaults just to make sure that are not any incorrect settings. This will restore the setting bact to the factory settings. If this does not correct your problem you can contact out customer service group and they should be able to trouble shoot your problem. Our number is 800-633-1468.
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/
Is the transducer face clean? Fouling and barnacles can cause poor depth readings. Also, a low power output from transmitter or poor sensitivity of the receiver (both internal), or a broken transducer cable connection (usually accompanied by heavy noise being painted on screen). With your ear in the water, fairly close to transducer (6-10 ft., you should hear a clear tick-tick-tick sound as it transmits on a medium depth range.. No power adjustment is available in the menus, but the unit does transmit at a slower rate, with wider (stronger) pulses on the deeper ranges.