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  • 997 c2

    I just bought a 997 SI. Am I right in reading that there are 2 different types of transducors? one for the back and one for the trolling motor? I had planned on putting it on my trolling motor but i'm thinking now i'll just put it on the back.
    Make VAO Great again

  • #2
    if you're mounting your unit up front, put the 'ducer on the TM. if it'a gonna be a console mount, put it on the rear. should be the same 'ducer either way.
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    • #3
      Thanks airborne...I'm thinking about putting it up front because 90% of my fishin is on trolling motor only lakes
      Make VAO Great again

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      • #4
        I have a 997 on the front of my boat (but a 1198 on console). Keep in mind that to get more detail you'll need to be going 3-5mph - hard to do with TM only. It is the same transducer either way. When I only had one SI unit, I had it on the console. This way I could search water in great detail using the gas motor, mark areas of interest and throw out a marker bouy to fish 'em if needed.
        Another thing to consider is the GPS mount. If you mount your GPS puck towards the back of the boat and the graph at the front you'll by default be off your grid by that distance.
        2010 VAO Fling Before Spring Overall Winner

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        • #5
          Originally posted by offbelew27 View Post
          I have a 997 on the front of my boat (but a 1198 on console). Keep in mind that to get more detail you'll need to be going 3-5mph - hard to do with TM only. It is the same transducer either way. When I only had one SI unit, I had it on the console. This way I could search water in great detail using the gas motor, mark areas of interest and throw out a marker bouy to fish 'em if needed.
          Another thing to consider is the GPS mount. If you mount your GPS puck towards the back of the boat and the graph at the front you'll by default be off your grid by that distance.
          The speed statement is NOT true with Humminbirds, that is a Lowrance Structure Scan deficiency.
          I get good sharp images close to 0 speed and use the SI view on the trolling motor all the time.
          The slower you go, the more detailed the images will be.


          You may want to spend some time learning how to operate your units a little better.

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          • #6
            Wayne,
            Forgive me if I somehow insulted you with my post that caused your snide reply. I was referring to SI, not 2D or DI- perhaps I should've been more clear in my response. And yes, I do use SI when sitting still using the 'ducer on the TM, but you hardly get detail as it requires relative motion for an optimal display. Lastly, in reply to your remarks, I have spent a good deal of time with my units and think I know them pretty well. But, I also understand I'm just an average Joe....so take the word of these folks at Humminbird or the fisherman on their payroll. I'm certain they know better than the both of us.

            Tim Horton- Elite Series Pro
            Getting that speed right is a really big deal," says Horton, who idles between 3.5 to 5 miles per hour while side scanning. "The boat has to be moving at a certain speed for it to work best. If you're idling too fast, it'll miss (details), and if you're idling too slow you're getting the same cut or image over and over."

            Humminbird Pro-Staffer Doug Vahrenberg

            "Matching scroll speed to boat speed is the first step to providing crisp, clean images that are free of distortion. Keep your boat speed between 3-5mph and match your chart speed to this".

            From Hummingbird.com Support FAQ.

            Does the boat have to be moving for the Side Imaging sonar to work?

            Yes. The Side Imaging sonar works much like a MRI. The beams are laser thin and as they move past an object they take 100’s of thin slices of the object and compile them into a high-detailed image of the object. If the boat is sitting still the beams will continue to take thin slices of the same spot and continue to show the slice of this spot continuously.


            The fact that the boat has to be moving for SI to work is the reason why Humminbird developed 360 imaging- so the boat can be perfectly still and still get detailed, picture like images (and of course expanding the view around the boat). So, instead of requiring the boat to move they engineered the transducer to spin to create the motion. Again, don't take my word for it....



            Jeff Kolodzinski, brand manager, Humminbird. “Also, for the first time ever, an angler can have their boat in a stationary position and receive updated underwater images...”

            PSUHunter- The 2D and DI will work fine on the TM, but you'll weaken the ability to do what this unit is designed for...side scanning. The reason I suggest the console is so that you can cover large amounts of water searching for fish, contours, structure, bait etc....this efficiency is the beauty of side scan. If you're only wanting the downscan and 2D you can get than in a much cheaper unit.
            2010 VAO Fling Before Spring Overall Winner

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            • #7
              I am referring to SI, that is the same imaging as the SI in the picture I posted. Same crystals, and same frequencies.
              I just posted that image to show the difference in how DI shows what 2D does of the same subject.

              Doug and I have posted many trolling motor screen shots on BBC and so have a lot of others. Doug has stated numerous times of his preference for using Side Imaging at the bow.
              Along with that to use a screen scroll speed to closely match the GPS speed.

              How about this just Side Imaging screen shot:



              Another thing is when fishing, a whole screen of sharp image is useless just as it is with traditinal sonar. Only the very first row of sceen pixels is current data, all after that on the display is history. It something is not constantly being display on that first row of pixels, it is not in the coverage of the sonar pulse.

              When sitting still fishing schooling bass, you can just turn the motor and keep up with the bass's position to you can cast where they are.
              I saved this screen shot doing just that. I saw these bass at the school of shad and in the upper part of the view you can see the bass (white streaks with their shadows) as I was turning the trolling motor to see where they were.
              Doug asked me to post the image on BBC so that technique could be discussed with additional similar images added.

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              • #8
                Originally posted by offbelew27 View Post
                Wayne,
                Forgive me if I somehow insulted you with my post that caused your snide reply. I was referring to SI, not 2D or DI- perhaps I should've been more clear in my response. And yes, I do use SI when sitting still using the 'ducer on the TM, but you hardly get detail as it requires relative motion for an optimal display. Lastly, in reply to your remarks, I have spent a good deal of time with my units and think I know them pretty well. But, I also understand I'm just an average Joe....so take the word of these folks at Humminbird or the fisherman on their payroll. I'm certain they know better than the both of us.

                Tim Horton- Elite Series Pro
                Getting that speed right is a really big deal," says Horton, who idles between 3.5 to 5 miles per hour while side scanning. "The boat has to be moving at a certain speed for it to work best. If you're idling too fast, it'll miss (details), and if you're idling too slow you're getting the same cut or image over and over."

                Humminbird Pro-Staffer Doug Vahrenberg

                "Matching scroll speed to boat speed is the first step to providing crisp, clean images that are free of distortion. Keep your boat speed between 3-5mph and match your chart speed to this".

                From Hummingbird.com Support FAQ.

                Does the boat have to be moving for the Side Imaging sonar to work?

                Yes. The Side Imaging sonar works much like a MRI. The beams are laser thin and as they move past an object they take 100’s of thin slices of the object and compile them into a high-detailed image of the object. If the boat is sitting still the beams will continue to take thin slices of the same spot and continue to show the slice of this spot continuously.


                The fact that the boat has to be moving for SI to work is the reason why Humminbird developed 360 imaging- so the boat can be perfectly still and still get detailed, picture like images (and of course expanding the view around the boat). So, instead of requiring the boat to move they engineered the transducer to spin to create the motion. Again, don't take my word for it....



                Jeff Kolodzinski, brand manager, Humminbird. “Also, for the first time ever, an angler can have their boat in a stationary position and receive updated underwater images...”

                PSUHunter- The 2D and DI will work fine on the TM, but you'll weaken the ability to do what this unit is designed for...side scanning. The reason I suggest the console is so that you can cover large amounts of water searching for fish, contours, structure, bait etc....this efficiency is the beauty of side scan. If you're only wanting the downscan and 2D you can get than in a much cheaper unit.

                You want to use Doug as a reference for your statement, I will too. Look at this video he did:

                http://www.youtube.com/watch?feature...&v=vT8nArMGwPA

                He has frequenty stated if he could only have one SI unit, it would be on the trolling motor.

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                • #9
                  That is fair and I'm not saying SI has no use on the TM. Again, I have one on my TM and use it everytime out. I've had the same instances as you've mentioned and pictured above (2nd pic, as the first image was NOT generated with the boat sitting perfectly still). It is a benefit for sure. The image you posted above is a great example of how it can be used at the TM. But it also proves my point that the images are distorted, pixelated and not as crisp as they would be if the boat were in motion.
                  2010 VAO Fling Before Spring Overall Winner

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                  2010 LAPR/VAO 150 Series Champion
                  Walmart BFL All-American Qualifier

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                  • #10
                    I have HB SI's on front and back, networked. I have been in Lowrance boats and their sidscan is better at higher speeds. It is all a software / processer choice by the vendor. The best images of course come from when you have the speed and scroll rate and settings right for the depth etc. i think Waynes point is and one I agree with is that once you realize a signal is always going out and pixels displayed on the screen, with the right interpretation, it can provide extremely valuable information even at zero speed. I swing the TM left and right to try and use the SI as a look ahead device for example. I have the 360 on order but have made do. You can also tilt the transducer forward to look ahead and just mentally compensate. You don't need a perfect, clear image to be clued in if you can mentally interpret the feedback...to be honest, knowing Mark, he knows this too, was just making another point....

                    great images...,i will start posting some soon as well.


                    cheers
                    cheers,
                    Steve

                    2011/2013 St Jude's Charity Tournament Champion
                    Bass East Big Bass Challenge winner of 11-12 and 12-1 hours.

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                    • #11
                      offbelew27, the reason I replied to this post was to contradict your statement "Keep in mind that to get more detail you'll need to be going 3-5mph - hard to do with TM only"

                      That is a false statement no matter who makes it and is clealy shown in the images I posted (look at the speed readout) as well as several of the images I posted on another thread.
                      Of course Imaging does take movement, BUT you are not restricted to a speed range to get sharp images like with Lowrance Structure Scan.
                      Humminbird Side Imaging has adjustable screen scroll speed and Lowrance Structure Scan does not.

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                      • #12
                        Honestly for the SI the best place to go is www.sideimagingsoft.com Great site, and all about humminbird SI. Personally, I have two choices I would make. 1)Networked units on bow and console, with transducer switch so that I can use a ducer on the TM and on the transom. 2) Just one unit on the console, but still have the transducer switch so that I can get images from either method of fishing.

                        That being said, I like to scan an area with my gas motor, and then switch to TM, having SI available for both.

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                        • #13
                          Originally posted by Pete D. View Post
                          Honestly for the SI the best place to go is www.sideimagingsoft.com Great site, and all about humminbird SI. Personally, I have two choices I would make. 1)Networked units on bow and console, with transducer switch so that I can use a ducer on the TM and on the transom. 2) Just one unit on the console, but still have the transducer switch so that I can get images from either method of fishing.

                          That being said, I like to scan an area with my gas motor, and then switch to TM, having SI available for both.
                          Actually the Forums on Bass Boat Central are the best for discussing sonar technologies. There are separate forums for Humminbird and Lowrance and the site usage is a lot higher than any other sites I have seen. I am familiar with the sideimagingsoft site, unofficial Side Imaging forums, the Side Imaging Group on Yahoo and individual topics on several sites like this.

                          I use three Humminbird Side Imaging units on my boat.

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                          • #14
                            BBC does have great info on SI, this is true. It also helps that Doug V is on there :) The point I was making, I guess, was that this forum probably isn't the best for SI issues, as Im sure you'd agree. But everything else is great info!

                            Wayne, what made you go with Humminbird rather than Lowrance? Im just curious. I like to know why the more experienced anglers choose what they choose. I have seen some really nice shots from both units.

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                            • #15
                              Originally posted by Pete D. View Post
                              BBC does have great info on SI, this is true. It also helps that Doug V is on there :) The point I was making, I guess, was that this forum probably isn't the best for SI issues, as Im sure you'd agree. But everything else is great info!

                              Wayne, what made you go with Humminbird rather than Lowrance? Im just curious. I like to know why the more experienced anglers choose what they choose. I have seen some really nice shots from both units.
                              Good question and I'm glad you asked. It is quite simple.
                              I checked all the capabilities of both companies when I decided I wanted the imaging technology.
                              My purpose to be on the water is for fishing. I wanted a fishing tool more than I wanted just a search tool.
                              With Side Imaging I get both due to the adjustabilty and its shallow water capability.

                              I use Side Imaging all the time at the console and at the bow. I seach as I navigate with the outboard and I search as I fish when at the bow. I basically "sight fish" all the time since I can see what is away from under the boat as long as the transducer is not buried in the lake bottom. If the water is muddy during the spawing period, it makes no difference, I can see the fish on the beds with SI and cast to them just like I would if I could visually see them.
                              I rarely even use 2D sonar any more, except for vertical presentations when I want to see my presentation, since SI shows me the water column under the boat and what is away from under the boat to the range I have SI set to.

                              I can be motionless and get usable fishing images, even keep up with schooling bass as they move about without surfacing-all it have to do is turn the trolling motor to see were they are.

                              These images show where I was checking a spawning flat next to a dollar pad field (light area) with my bow unit and trolling motor mountd SI transducer. The water was muddy so I could not see the pad stems--the pads had not formed yet so all of it was submerged. I was looking for early spawners. You can see some of the beds from previous years and there are two grooves in the bottom from some one's outboard (top right). Note the depth and the SI range I was using.



                              This is the edge just before the above image.



                              Structure Scan does a great job as a search tool. Just not what I wanted to limit myself to.

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