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Author Topic: Humminbird 899  (Read 8216 times)

Offline clvalent

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Humminbird 899
« on: October 28, 2015, 02:29:58 PM »
Every once and a while my 899 depth will be very wrong. It will say I'm in several hundred feet of water when it's not nearly that deep. I have attached a picture to show what I mean. Any ideas on what's goin on here?
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Offline JackJ

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Re: Humminbird 899
« Reply #1 on: October 28, 2015, 04:33:26 PM »
I get that when I am too shallow for it to work properly?  How deep of water were you in?
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Offline clvalent

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Re: Humminbird 899
« Reply #2 on: October 28, 2015, 04:39:21 PM »
It does it even when I'm out deeper in like 20 feet. Not just when I'm shallow. I was prob in 6-8 feet during this picture
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Offline Curt

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Re: Humminbird 899
« Reply #3 on: October 28, 2015, 07:17:39 PM »
Every once and a while my 899 depth will be very wrong. It will say I'm in several hundred feet of water when it's not nearly that deep. I have attached a picture to show what I mean. Any ideas on what's goin on here?

Do you have another Humminbird on the boat? Sometimes two units running on the same or a very similar frequency will interfere with each other, causing incorrect depth readings.

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Offline clvalent

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Re: Humminbird 899
« Reply #4 on: October 28, 2015, 10:35:10 PM »
Ya. I have an 859 up front. However. If the frequencies cause interferences wouldnt I have the same problem up front?? Because the front unit has never done this. Except in very shallow water.
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Offline Curt

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Re: Humminbird 899
« Reply #5 on: October 28, 2015, 11:35:29 PM »
Ya. I have an 859 up front. However. If the frequencies cause interferences wouldnt I have the same problem up front?? Because the front unit has never done this. Except in very shallow water.

Not necessarily. Try turning the front unit off for a while and see if you still experience the same problems.

Right now this is a process of elimination. So try one thing at a time to see if you get any results.

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Offline clvalent

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Re: Humminbird 899
« Reply #6 on: October 29, 2015, 03:08:05 AM »
 Will do thanks for the tip
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Offline Curt

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Re: Humminbird 899
« Reply #7 on: October 29, 2015, 06:56:09 AM »
Will do thanks for the tip

You're welcome. Let us know how it goes.

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Offline JackJ

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Re: Humminbird 899
« Reply #8 on: October 29, 2015, 08:55:57 AM »
Yep I was going to mention that too, I have to keep my front and back set to different frequencies just for that reason.
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Offline Curt

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Re: Humminbird 899
« Reply #9 on: October 29, 2015, 09:31:28 AM »
Yep I was going to mention that too, I have to keep my front and back set to different frequencies just for that reason.

I didn't know the frequency could be changed.

@JackJ how do you change the frequency?

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Offline JackJ

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Re: Humminbird 899
« Reply #10 on: October 29, 2015, 09:52:08 AM »
On my Elite 5, I can chose between 50khz, 83khz and 200khz, and the downscan works at 455khz.   
On my HDS 7 I can chose even more, but I usually leave it on sideimaging most of the time anyways which works at 800khz.

In the menu you chose, sonar> then Frequency, then just change it there.

Surely you can do this on the humminbird also.

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Offline Curt

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Re: Humminbird 899
« Reply #11 on: October 29, 2015, 10:41:35 AM »
Cool. Great info. Thanks!

@clvalent this info might help  (yes)

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