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[TG11] Dragonfly 5 Pro Noise
05-17-20, 12:01 PM (This post was last modified: 05-20-20 02:22 AM by Tom - Raymarine - Moderator.)
Post: #1
[TG11] Dragonfly 5 Pro Noise
Hello! I just got the Dragonfly Pro 5. I love the system and it's perfect for my kayak. However, I'm seeing a lot of noise on the screen. I tested it in a crystal clear river with slow moving current and I tested it on a pond that wasn't super clear, but not bad. In both areas my older Garmin had no issues.

I have it side-mounted on a Ocean Kayak Big Prowler II kayak. I attached screenshots (and pictures) of what the clutter looks like.

I adjusted the contrast and it seems to clear it up but it's definitely not ideal. Tuning the gain definitely fixes it but I'm not sure that is ideal based on what I'm reading.

Thoughts?
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05-20-20, 02:27 AM
Post: #2
RE: [TG11] Dragonfly 5 Pro Noise
Hello mackhax0r,

Is that the default all-Auto setup? If it's not in default all-Auto, what do you get under those conditions?

The Dragonfly is a very sensitive sounder and will pick up weak echoes that other sounders might miss, and if you prefer not to see those echoes then reducing the Gain or increasing the Surface Filter is the right approach on a Dragonfly (Gain works on the whole water column, Surface Filter specifically suppresses near-surface clutter top-down.)

There's a lot more detailed sounder diagnostic info here.

Regards,
Tom

Raymarine since 1999.
Interests: Diagnosis of problems in sonar/fishfinders, NMEA2000, ethernet comms, autopilots, thermal cameras
Location: Sydney, Australia.

Please don't PM me asking for direct support, please ask a public question instead so that others can see the question and answer. Forum posts will always be answered before PM requests.
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05-21-20, 12:38 AM
Post: #3
RE: [TG11] Dragonfly 5 Pro Noise
Hi! Yes, that is 100% default settings. The only way to fix it is to manually adjust the gain. I had the same results in two different ponds. I have not tried salt water yet.

I didn't see the surface filter settings - is that listed in the same area as the gain/contrast?

I did review the diagnostic info - thanks! It's been really cold and windy so I haven't been out to even test things.
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05-21-20, 10:40 PM
Post: #4
RE: [TG11] Dragonfly 5 Pro Noise
Sorry, on a Dragonfly it's called Noise Filter, but yes, it's in the same Sensitivity setup as Gain and Contrast.

Regards,
Tom

Raymarine since 1999.
Interests: Diagnosis of problems in sonar/fishfinders, NMEA2000, ethernet comms, autopilots, thermal cameras
Location: Sydney, Australia.

Please don't PM me asking for direct support, please ask a public question instead so that others can see the question and answer. Forum posts will always be answered before PM requests.
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