Question about Humminbird Xt 6 20 Transom Mount Dual Beam Transducerdesc: 83/200 Khz

1 Answer

Screen shows bottom fine but doesnt show any fish i have changed every setting but nothing works

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  • Anonymous Mar 30, 2014

    have set try setting back to factory settings but it still does not show fish. when outboard is used it will indicate fish but l know that those are false readings.

  • Anonymous Mar 30, 2014

    when l first brought the 570 unit it worked fine but it will not show images of fish. l can see bottom structure but no fish

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  • Master
  • 425 Answers

Fish on the bottom show as a blur, similar to weed, and pelagics show the same, but because of there position they are easy to recognise. Large singe fish like schnapper and sharks tend to show as an upside down V. You will have to use it often and you will eventually, by experience be able to tell whether you are looking at fish or weed.

Posted on Feb 07, 2010

  • Adrian Ahrens
    Adrian Ahrens Feb 10, 2010

    Bit of a problem when you cant handle the truth?????

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1 Answer

How do i get the fish on the screen to look like fish


Your unit should have a setting labeled "FISH ID" turn this setting on and you will see fish shaped icons instead of arches on your screen. You may also see numbers by these icons. Those numbers represent the depth of the fish at that moment.
Be forewarned that at times your unit will show the fish icons when there aren't actually any fish below the boat. Hope this helps.

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Most sonars have a setting for FISH ID, on or off.. Not sure on the type of unit you have, so hope that helps. I've seen where hummingbird fishing buddy only have fish images and not arches...

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Sounds like either the sensor is broken or the line going to the monitor is cut or frayed. Its possible you might have to replace the line. Just in case though check to see if the line to the monitor is loose. That might be your problem right there.

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Hi there.

Ok in WIDE beam mode the cone extends out 45 degrees from the transducer. This covers a fair area, but is best used only in shallow waters as the beam may not have enough power to penetrate deeper waters effectively. 30ft should be fine for WIDE mode however. Using a bit of trigonometry, the beam would extend to a diameter of 60 feet from the center point of the transducer on the sea/river floor.

The beam is a direct beam... It is not a rotational beam from the transducer... i.e. it does not rotate like a radar beam but shoots downward in the cone arc constantly. Imagine a torch being turned on and off very rapidly... The light shoots straight out from the torch in its own cone shape. This is essentially what the transducer does when it shoots out a signal every millisecond or so.

The image you see on the screen is the result of the hole cone of signals, however, the strongest sonar returns occur near the center of the beam. Weaker returns are shown which are located towards the outer edges of the sonar cone where the signal power is less. So if a fish passes right on the edge of the beam, it will only show up as maybe 1 pixel on the sounder screen as it is a weak return on the edge of the sonar cone, whereas if that fish passes under the center of the beam, it will show a larger, more continuous or arched shaped return as the fish moves from the outside of the beam, through the center of the beam, and out to the other edge of the beam under the boat.

Regarding the flasher... I would advise not to use this. It does work by showing a continuous top and bottom reading which displays as constant flashes around the circle readout. Anything it picks up in the beam will show as flashes in between the top and bottom readings. Using the display is far better and with practice allows you to better identify fish and bottom structure readings. Flashers were earlier forms of sonar readouts. Some older folk still like them but I believe the normal display is better for finding and identifying fish and can show structure shape as well (the flasher mode really cannot).

Hope that helps!

Please rate this solution on FixYa!

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