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Garmin gsd 26 how to get good reading??

Old 11-08-2016, 04:34 PM
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Default Garmin gsd 26 how to get good reading??

Ok so I was in the boat today. I have done the latest updates to the units and gsd26. The setup is garmin 5212, garmin 4212, gsd 26 transducer is a b-175h. It holds bottom great just the fish marks are like blobs and not solid archs, what is wrong? Or is this as good as it gets? Not real thrilled with this setup so far
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Old 11-08-2016, 04:35 PM
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Another pic
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Old 11-08-2016, 04:38 PM
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Another
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Old 11-08-2016, 05:18 PM
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B175H transducer has a narrow beam width 6-11 degrees.

In shallow water, the fish returns won't show as arches so much with such a narrow beam.

To control the beam width (within the capabilities of the transducer), switch to fixed frequency mode and select 130kHz for 11 degrees and 210kHz for 6 degrees (and variations in between).
Old 11-08-2016, 05:20 PM
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Originally Posted by OZFish View Post
B175H transducer has a narrow beam width 6-11 degrees.

In shallow water, the fish returns won't show as arches so much with such a narrow beam.

To control the beam width (within the capabilities of the transducer), switch to fixed frequency mode and select 130kHz for 11 degrees and 210kHz for 6 degrees (and variations in between).
How do I do this?
Old 11-08-2016, 05:24 PM
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When you tune it; n better, you'll get q more distinct picture.
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Old 11-08-2016, 05:28 PM
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Originally Posted by airbrush View Post
When you tune it; n better, you'll get q more distinct picture.
10-4.......in my opinion garmin sounder blows!
Old 11-08-2016, 05:33 PM
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here
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Old 11-08-2016, 05:34 PM
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page 91-92 on 5212 manual.
Old 11-08-2016, 05:37 PM
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more
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Old 11-08-2016, 05:37 PM
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Thanks..... don't have a manual
Old 11-08-2016, 05:38 PM
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Originally Posted by coastalfiberglass View Post
10-4.......in my opinion garmin sounder blows!

Did you bother to read the manual before or after you came up with the "blows" conclusion?


Nevermind....just saw your most recent post.........
Old 11-08-2016, 05:40 PM
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Originally Posted by airbrush View Post
When you tune it; n better, you'll get q more distinct picture.
Thanks, I need a good laugh.
Old 11-08-2016, 05:42 PM
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I've owned a lot of garmins. Neverhad a bunch of arches. My old Lowrance chart plotter with the wax paper roll showed perfect, arches. the rolls also cost me a bloody fortune.

Then I digress, to the age of Loran for marine use.

By the way, go on the Garmin website forthe manuals
Old 11-08-2016, 05:44 PM
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My old furuno blew this thing out the water
Old 11-08-2016, 05:47 PM
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Its not the sounder it the selected transducer, the narrow cone angle is not good at giving us the "ideal" arches we all crave and desire. Whats your scroll speed?


This may help a bit


In order to get “fish arches” that sonar manufacturers lead us to believe we should be seeing, either the boat or the fish must to be moving at a pretty good clip – a lot faster than most of us move when we’re crappie fishing and a lot faster than crappie move most of the time. Arches are created because as a fish passes through the “cone” of the transducer it is farther from the transducer when at the edge of the cone and closer to the transducer when in the center of the cone. The width of the arch depends on several factors including, cone angle (width), how deep the fish is, how fast the fish passes through the cone and also how fast your Scroll Speed is set.

The cone angle affects fish arches because at a given speed (boat or fish) and Scroll Speed it takes longer for a fish to pass through a wide cone than a narrow cone at any given depth. The varying depth of fish also affects the arches because the cone gets wider as it gets deeper so the deeper a fish is the longer it takes for it to pass through the cone and visa versa because of the difference in the distance across the cone at different depths.

The faster a fish passes through the cone and/or the slower your Scroll Speed is set the shorter the arch is going to be up to the point where it is just a blob instead of an arch. The slower a fish passes through the cone and/or the faster your Scroll Speed is set the longer the arch is going to be up to the point that it goes all the way across your screen.

If you get over an active school of fish that are moving up and down in the water column you’re going to see lines that go up and down your screen like a bunch of snakes. Crappie however are not usually that active and if you’re sitting still or moving very slowly over a brush pile you can expect them to show up as solid lines across your screen rather than arches. When a fish moves up or down in the water column the line will move up or down accordingly as it scrolls across your screen.


Old 11-08-2016, 05:48 PM
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Originally Posted by coastalfiberglass View Post
My old furuno blew this thing out the water
Thats funny I have both and yes I agree the Furuno is very nice but my GSD can see a swordfish fart in about 1800' so its no slouch either, why don't you take the time to read up on your equipment before bashing it on an internet forum?

OR sell it and get the Furuno, but to say the GSD 26 Blows only shows your lack of knowledge of your equipment.

Best of luck to you either way...
Old 11-08-2016, 05:58 PM
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I'm just a dumb old bilge rat, but my next buy will be all Furuno also. All of us have good & bad expriences but I think (my opinion only) that gamin's heart is now in aviation and the marine market is a lucrative step child. I'm saying that and I've owned a ton of Garmin.
Old 11-08-2016, 05:59 PM
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I will gladly sell this equipment if there is a interested buyer! It reads bottom fine but the picture sucks. I have plenty of experience with sounder units and so far this is not impressing me. Anyway just my .02, was just curious if anyone else had opinions on how to fine tune this machine. I just purchased this boat with all this equipment, so need to save my pennies to redo the electronics in the spring. I had old garmin gsd 22 and a gsd 24 and now a gsd 26 and can tell you with confidence that a furuno dff1uhd with a b275 ducer will run circles around this unit that I have. I had it on my old boat so this is not hear say.
Old 11-08-2016, 06:13 PM
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Originally Posted by InternationalMarineBrian View Post
Its not the sounder it the selected transducer, the narrow cone angle is not good at giving us the "ideal" arches we all crave and desire. Whats your scroll speed?


This may help a bit


In order to get “fish arches” that sonar manufacturers lead us to believe we should be seeing, either the boat or the fish must to be moving at a pretty good clip – a lot faster than most of us move when we’re crappie fishing and a lot faster than crappie move most of the time. Arches are created because as a fish passes through the “cone” of the transducer it is farther from the transducer when at the edge of the cone and closer to the transducer when in the center of the cone. The width of the arch depends on several factors including, cone angle (width), how deep the fish is, how fast the fish passes through the cone and also how fast your Scroll Speed is set.

The cone angle affects fish arches because at a given speed (boat or fish) and Scroll Speed it takes longer for a fish to pass through a wide cone than a narrow cone at any given depth. The varying depth of fish also affects the arches because the cone gets wider as it gets deeper so the deeper a fish is the longer it takes for it to pass through the cone and visa versa because of the difference in the distance across the cone at different depths.

The faster a fish passes through the cone and/or the slower your Scroll Speed is set the shorter the arch is going to be up to the point where it is just a blob instead of an arch. The slower a fish passes through the cone and/or the faster your Scroll Speed is set the longer the arch is going to be up to the point that it goes all the way across your screen.

If you get over an active school of fish that are moving up and down in the water column you’re going to see lines that go up and down your screen like a bunch of snakes. Crappie however are not usually that active and if you’re sitting still or moving very slowly over a brush pile you can expect them to show up as solid lines across your screen rather than arches. When a fish moves up or down in the water column the line will move up or down accordingly as it scrolls across your screen.


Glad you posted this, Its hard for many to interpret what the FF is telling us.

I was in 15 FOW the other day jigging up small rock and blues (12") . each time I hooked one, several streaked up to back of boat. It was kinda strange to see Huge "Arches" on screen for such small fish.. Had I been trolling in 30-40 FOW I would have thought 60" fish! I also could see my jig on the FF so it helped to interpret what was shown. It takes time to learn to interpret what is being shown on screen. (I have simrads)

My last boat had Garmin 94SV, I loved it!

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