Author Topic: Mapping with 200 Khz and Dr.Depth  (Read 2707 times)

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Offline DiveExplorer

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Mapping with 200 Khz and Dr.Depth
« on: June 18, 2014, 11:02:40 AM »
Have you ever mapped a lake or something else using only 200 Khz.

My sonar seems not have 83 khz but 200/455/ and 800 Khz. I was wondering if that would be a problem as 200 khz cone is smaller than 83 khz.


Offline Humminbird_Greg

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Re: Mapping with 200 Khz and Dr.Depth
« Reply #1 on: June 18, 2014, 12:03:43 PM »
Which Humminbird model unit do you have DiveExplorer?
It sounds like you have one of the DI models with those frequency selections.
Greg Walters at Humminbird
gwalters@johnsonoutdoors.com

Offline DiveExplorer

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Re: Mapping with 200 Khz and Dr.Depth
« Reply #2 on: June 18, 2014, 01:14:59 PM »
Yes, I have 581i HD.

Offline Rüdiger

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Re: Mapping with 200 Khz and Dr.Depth
« Reply #3 on: June 20, 2014, 08:27:37 AM »
Hi DiveExplorer

You can also work with the other frequencies, but among them may suffer accuracy because DrDepth emanating from a recording at 200kHz.
I myself have created a map with the 800kHz sidecan information.

mvh
Rüdiger
Sorry
English is not my first language !

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https://www.sob-international.com/

Offline DiveExplorer

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Re: Mapping with 200 Khz and Dr.Depth
« Reply #4 on: June 20, 2014, 01:19:58 PM »
Thank you for the reply Rüdiger.

I was just concerned that I bought a wrong sonar to use for mapping. I thought 581i HD had 83 Khz also.

If  i can use 200 Khz for both mapping depth and hardness than it would be enough. I was thinking that using only 200 khz it would cover a lot less area than 83 khz.



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