Topic: 898 update 6.180 on the water problems

[sonar2000]

Yes the cone is very thin. But considering the update changes and the actual operation it could be part of the problem.

You are right in that is could be a surface water reflection as that is where the water and air meet.

Also ITGeek posted a while back and made a statement that it is not unusual for two identical units to operated somewhat differently when displaying..Who realy knows.,.Howeve having said that ....the issue is there for some...

Chuck

[Patty]

before the update I never had the lines on my screen... that said I never had the jackplate installed either.... could it just be electrical interference of some kind?  if it is the way the transducer is receiving the signal could minor adjustments in angle help? its not A huge issue for me but I would like to make it in away...

[sonar2000]

Patty, could be angle, could be depth of the transducer., could be ??

dont really know but for most it is there. On the HB units.

However I will go back and look at some of the old towfish as I dont recall it being there..

Chuck

[Patty]

Here are some pics of the lines...

[ITGEEK]

Patty,
I think those are SI range lines.
You can turn those off in either the Sonar or the SI menu.

[sonar2000]

ITG, I think he is talking about the lines on the left transducer at the surface.. I think this is a reflection from a tilted transducer or an unlevel boat..

Chuck

[ITGEEK]

Thanks Chuck.
I see it now.
That's weird.

[sonar2000]

Weird,,,yes...but it is the way the HB transducer works and just shows how sensitive it can be to variations and influence..

Chuck

[Patty]

So maybe I should play with the angle of my transducer??? sometimes it does seem to "go away" or at least lessen somewhat...

[sonar2000]

Yes I would try that....Since we know the angle is very important and can be influenced by boat weighting..as in placement of gear and people.

Chuck

[Moose1am]

Yes there are SI range lines shown but Patty is talking about the other lines next the middle of the SI screen view and before the first range line on the left.

I see them.  Not sure what they are unless that's come type of electrical interference. I read where someone else said that about these multiple lines. I think it was Humminbird Greg that suggested I test my boat with the range set to less than 40 ft so that I could see the multiple lines better.  I did that and still saw only one bright line on the left side of my screen. But when I did change the range I was able to see more lines on the right side of my screen.  And when I use the 800 KHz frequency setting for my SI the left side of my screen was much darker than the right side. That worries me more than anything now.  But maybe that side was just deeper than the right side was at that time.  So many variables that are hard to isolate from each other when i'm on this lake that's vary's in depth a lot.

Patty,
I think those are SI range lines.
You can turn those off in either the Sonar or the SI menu.

ITG, I think he is talking about the lines on the left transducer at the surface.. I think this is a reflection from a tilted transducer or an unlevel boat..

Chuck

ITG, I think he is talking about the lines on the left transducer at the surface.. I think this is a reflection from a tilted transducer or an unlevel boat..

Chuck

[Moose1am]

I Changed the weight distribution in my boat to try to make it more level when I am in the boat by myself.  I weight 235 lb now and the boat wants to list to  starboard when I'm driving it.  So I added some weight in the form of Lead shot 25 lb bags to the port side back compartment of my boat.  I could tell by the water scum line on my aluminum boat that my boat was listing to starboard.  Now it's more level with the added weights . 

I'm wondering if when I put the metal bracket on my boat back in 1986 if I put in on in such as way as to compensate for the listing.  So that now that the boat is more level the Left SI beam is pointing upwards more than it should.  But really when I look at the boat from the back the transducer seems to be level with the boat now.  I'll check the pitch of the transducer too.

I still have to take the transducer off the boat and mount it to a long pole to test it. That will require me to get some more slack in the transducer cable . Which means I'll have to unhook it from the control head and back it out though the boat's starboard side and unwrap it from my steering cable next to the right side of my motor. I wrapped it around this 1" diameter cable to secure it in place. The tranducer itself won't go around this cable as it's too big to do that in the spot where I wrapped the tramsdicer cable around the steering cable.

Yes I would try that....Since we know the angle is very important and can be influenced by boat weighting..as in placement of gear and people.

Chuck

Yes there are SI range lines shown but Patty is talking about the other lines next the middle of the SI screen view and before the first range line on the left.

I see them.  Not sure what they are unless that's come type of electrical interference. I read where someone else said that about these multiple lines. I think it was Humminbird Greg that suggested I test my boat with the range set to less than 40 ft so that I could see the multiple lines better.  I did that and still saw only one bright line on the left side of my screen. But when I did change the range I was able to see more lines on the right side of my screen.  And when I use the 800 KHz frequency setting for my SI the left side of my screen was much darker than the right side. That worries me more than anything now.  But maybe that side was just deeper than the right side was at that time.  So many variables that are hard to isolate from each other when i'm on this lake that's vary's in depth a lot.

[Roddy]

LOOKS like the transducer is off level.

[Patty]

Off level side to side or front to back??? Like i said earlier the unit performed flawlessly before 6.180 and the jackplate... The jackplate set my motor (V6 2 stroke) back 6" further... so i'm wondering  if i should re adjust the angle of the transducer, i didn't think that it lowered the transom all that much but maybe it did....



Does anybody think that that could be a boat in my first pic i posted???

[newkid4si]

Patty
     I agree with you in that I think it's a boat. If you go back over it using 2D sonar and it doesn't show as being raised above the bottom,
     don't give up on it being a boat. SI is powerful enough to show images in shallow soft bottom.

                  Mike

[Moose1am]

Patty where is the picture you said that you posted. I don't see it in this thread anywhere.

It's either the boat's not level or the software is creating problems.  Not sure which one it is until I play with the transducer on the pole and see what happens. My warranty will expire before I do that. Heck it's already expired now as I was doing these tests. 

Off level side to side or front to back??? Like i said earlier the unit performed flawlessly before 6.180 and the jackplate... The jackplate set my motor (V6 2 stroke) back 6" further... so i'm wondering  if i should re adjust the angle of the transducer, i didn't think that it lowered the transom all that much but maybe it did....



Does anybody think that that could be a boat in my first pic i posted???

[ITGEEK]

Yea,
In the first picture, upper right.  It looks like a boat.
Open boat, like a rowboat.

[Patty]

Thought I would Give an update on the lines on the screen... I just bought a new Boat (lund) and so i took my 898 off the Javelin and installed it on the lund, in the process I had to re adjust the angle on the transducer because of amajor change in transom angle... I have not had the lines since I put it on the new boat, and I am assuming that i had the tail and of the transducer to high (Explaining why when i brought the noses of the boat up they went away) and releveling of the transducer solved the problem... i had tried re leveling it on the javelin but it didn't seem to help so maybe the Jackplate on the bass boat was interfering with it although there was a clear line of sight past it...