Author Topic: Any Helix G2N Images?  (Read 1640 times)

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Offline marknfish

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Any Helix G2N Images?
« on: January 10, 2017, 08:07:33 AM »
Has anyone had a chance to use the new G2N SI units with Mega Side and Down Imaging? would be interested in the images and an opinion on the comparison between the regular SI. Also any difference in CHIRP in less then 100 ft depths?


Offline abraquelebout

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Re: Any Helix G2N Images?
« Reply #1 on: January 13, 2017, 11:29:57 AM »
hi
i test a helix 12 méga g2 si, a demonstration model, i use humminbird in survey for archaeology.
test to compare 898 si with towfish at 800khz, and helix méga hull mounted ducer.
the down imaging are realy good for the helix, and the scan at 1200 khz give more thing and more resolution.
the hull movement are verry interactive to the scan,
i test it on reefmaster replay, it work good but whe must turn gain to mini.
on the test model, only one side is working.
i can give 2 sample
one is do with 898 si at 800 khz with towfish, and the second at 1200khz hull mounted with helix.
now i wait for a helix 10 méga, do a towfish and  >:D

Offline marknfish

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Re: Any Helix G2N Images?
« Reply #2 on: January 13, 2017, 03:04:36 PM »
Thanks!  Both look better than my transom mounted 997C SI BTW but for sure I can see the improvements :) between the images you provided
« Last Edit: January 14, 2017, 09:47:53 AM by marknfish »

Offline Rickard

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Re: Any Helix G2N Images?
« Reply #3 on: January 14, 2017, 08:51:44 AM »
Abra,
Do you have the length of the "mega"-transducer? I'm curious because it tells some about performance.
/Rickard

Offline zeebeest

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Re: Any Helix G2N Images?
« Reply #4 on: January 14, 2017, 11:20:08 AM »
nice pictures ,is that on salt or fresh water?

Offline abraquelebout

  • volunteer rescue diver, surfer, publicist
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Re: Any Helix G2N Images?
« Reply #5 on: January 15, 2017, 05:47:08 AM »
hi
picture take on fresh water, the lengh of the ducer ? i don't take time to mesure it but it's midle of Hdsi and Lss2, i suppose 3 array, it's more larger than hdsi and i think easy to make a towfish, in post traitment the picture are better than all i see for moment, i wait for a helix 10 mega, and a soon i get it, i can go on waypoint to compare.

Offline abraquelebout

  • volunteer rescue diver, surfer, publicist
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  • Accessories: towfish lowbird /LSS2-hdsi, 60mcable
Re: Any Helix G2N Images?
« Reply #6 on: January 16, 2017, 05:56:54 AM »
hi there's a inthernet page where we can see the ducer
http://www.technologicalangler.com/humminbird-mega-imaging

Offline zeebeest

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Re: Any Helix G2N Images?
« Reply #7 on: January 16, 2017, 09:46:31 AM »
also very nice pics , but i want to see pics in salt water before i buy one.

Offline abraquelebout

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Re: Any Helix G2N Images?
« Reply #8 on: January 16, 2017, 10:36:29 AM »
i think it's a verry good sounder, but in mega mode Very sensitive to the movements of the boat, in salt water maybe a problem, there's few waves and other things.


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