Humminbird Side Imaging Forums
Side Imaging Forums => Helix Series Units => Topic started by: Dewydog on August 07, 2023, 06:28:24 PM
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When I switch frequency views in 2d sonar my 440 490 screen has no returns.is this something with my unit or is it not suppose to show anything?
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1st Restore Defaults to get the unit to factory defaults and test ...
If this issue persists try adjusting the Sensitivity ... it’s not uncommon to need a different Sensitivity selection for different frequencies ...
A good general rule for 2d Sonar Sensitivity is to increase Sensitivity until there is too much clutter on the screen and then back it off a little ...
Rickie
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I did that still no returns or bottom.in simulation mode but the depth readings change like it should.
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Also when moving sensitivity up the screen does not change no returns or clutter? Maybe I've got the wrong transducer for the 440/490 frequency. It's a xtm 9 25 t.THANKS!
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What is the full model name of the HELIX 5 ... ??
Rickie
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Helix5 chirp di gps g2