Helix 10 Sonar vs DI Pictures

[barbarian]

Here are some side by side shots from my Helix 10 sonar/di screen. I forgot my card in the truck so had to use my phone. This disparity has been the norm. I've played with settings trying to get images to look the same. I had the sensitivity for these pictures turned down to 6 and DI contrast at 5 with sharpness off. Lots of grainy interference that day if I turned sensitivity up. I'm not sure that what I am seeing on the screen is anything of significance like bait or bass. Lots of wind lately and water was stained and I saw lots of floating grass so I'm assuming the images might be chunks of floating grass under water. We would catch an occasional small piece of grass with crankbait, but not every cast and no big chunks which leads me to believe the sonar image was closer to accurate. Is there anything I can adjust with settings to get the pictures to resemble each other or is this normal? Any tips would be appreciated.

[kyduck]

I am by no means an expert, but check you boat speed to chart speed numbers. They should be pretty close for better images. Also my images tend to look better idling over vs a standstill. From there adjust your sensitivity and contrast till you just get all the artifact out and you'll be pretty close.

[barbarian]

Yea these images did come from trolling and drifting, but it didn't look much different on my console helix 10 when idling at 3-4 mph. Definitely the same disparity in sonar vs di

[Wayne P.]

You get finer detail and wider coverage with DI, that is why they are different. Most of those fish were not in the 2D coverage.

[M4A1]

You get finer detail and wider coverage with DI, that is why they are different. Most of those fish were not in the 2D coverage.

Yup.

[barbarian]

You get finer detail and wider coverage with DI, that is why they are different. Most of those fish were not in the 2D coverage.

So you say that is fish on the DI? This is a pond dam that I fished for about an hour. It's about 100 - 150 yards long and I never saw my sonar screen pick up much of anything. I'd think if it was coverage that sometimes I would've crossed directly over the same stuff. I didn't realize DI offered that much difference though in detail.

What is the difference in coverage area at 15'?

[Wayne P.]

You can do your own calculations, estimates are:

Using 200 kHz you get about 5' width coverage--that's 28 degrees

455 DI gets 15'+ width coverage---that's 75 degrees.

455 kHz 2D gives you 16 degrees of coverage and 800 kHz DI gives you 45 degrees of coverage.

[barbarian]

You can do your own calculations, estimates are:

Using 200 kHz you get about 5' width coverage--that's 28 degrees

455 DI gets 15'+ width coverage---that's 75 degrees.

455 kHz 2D gives you 16 degrees of coverage and 800 kHz DI gives you 45 degrees of coverage.

I never knew the coverage was that much different.

[Bob B]

You could go with the DI Wide transducer .....but I think that is designed for the trolling motor.

[Wayne P.]

You could go with the DI Wide transducer .....but I think that is designed for the trolling motor.

Yes, the XTM WIDE DI 20 T is a trolling motor puck and is tuned for 83/200 kHz 2D sonar with spec coverage of 60/20 degrees.