Thread: Lowrance GPS Question?

Originally Posted by CarolinaJim

mduncan62, well my parents gave me the name Jim and GOD gave me the Carolina. LOL

Cane Pole, anyone that wnet to the moon got there with the help of 3 big blue letters. LOL So with the airmar the hds will not accpet the NEMA 2000 heading sentence and use that for the heading and use that to calculate the navigation arrow?

HDS will accept any NMEA2000 or NMEA0183 sentence related to GPS navigation and move the arrow. However, it will only refresh the map at 1 second rates, not at the 5 second rate of their own LGC4000 gps. I called airmar about this device.

LOW and HB gonna protect their stuff. They constantly pee on each others cupcakes.

I hooked my Garmin to my 997. The donut still showed up. haha

That sucks, the airmar has 10hrz refresh.

Yea, the donut is programed in based on speed. Does not bother me much easier to ignore, bothers me much less than the navigation arrow flipping all around.

Man, I hate soggy cupcakes.

Originally Posted by CarolinaJim

That sucks, the airmar has 10hrz refresh.

Yea, the donut is programed in based on speed. Does not bother me much easier to ignore, bothers me much less than the navigation arrow flipping all around.

Man, I hate soggy cupcakes.

My Garmin nor my HDS directional indicators do not jump around when stopped. I know what you mean about the jumping arrow, but I believe newer GPS just shut off to avoid that issue. HB just draws a circle. They could of used a ? mark.

I understand there are inherent errors in the gps galaxy. That is why mfgs state 3 meter accuracy. However, I also understand the magic of computer programming. This is just stuff that I worked with in my other life. Just call it orbit clutter.

ok.this is what we have learned.both lowrance and humminbird show a triangle shaped icon. at .6mph the humminbird will change icon to the famous duncan donut the lowrance will not change.both will continue to show coarse.this were im not sure whats happenning.now the humminbird has a extremely longer icon displayed on the nav screen compared to the lowrance" and in some updates coming this year the coarse projection line will continue all the way across the nav screen with a north up icon showing in lower right of screen.just bare with me" if what y'all saying is accurate then the lowrance is making guesses.my piont is if i already no were im going with the humminbird icon showing that all the way accross the nav. screen in advance and the lowrance having the little bitty icon which is harder to see and making these guesses what happens when the boat is turned 90 degrees maintaining this very slow speed ? im guessing that both units would require that there be a breath increase in speed because the humminbird donut and the lowrance making guesses. now it seems to me that if im already going ,let say south west and i already no way in advance were thats taking me by looking at the nav. screen that i wont need to keep looking for that triangle thingy that yall are getting all upset about. i would think that the main focus would be keeping the lines on the poles to stay as vertical as possible while maintaining the desired coarse until making a desired coarse change.

Originally Posted by Cane Pole

My Garmin nor my HDS directional indicators do not jump around when stopped. I know what you mean about the jumping arrow, but I believe newer GPS just shut off to avoid that issue. HB just draws a circle. They could of used a ? mark.

I understand there are inherent errors in the gps galaxy. That is why mfgs state 3 meter accuracy. However, I also understand the magic of computer programming. This is just stuff that I worked with in my other life. Just call it orbit clutter.

cane pole i have garmin gpsmap 76csx with electronic compass. with electronic compass turned off the icon will turn in erratic way.when electronic compass turned on it will not. i can do better with the compass on,but still cannot stay dirrectly over a brush pile

Originally Posted by kosmo

ok.this is what we have learned.both lowrance and humminbird show a triangle shaped icon. at .6mph the humminbird will change icon to the famous duncan donut the lowrance will not change.both will continue to show coarse.this were im not sure whats happenning.now the humminbird has a extremely longer icon displayed on the nav screen compared to the lowrance" and in some updates coming this year the coarse projection line will continue all the way across the nav screen with a north up icon showing in lower right of screen.just bare with me" if what y'all saying is accurate then the lowrance is making guesses.my piont is if i already no were im going with the humminbird icon showing that all the way accross the nav. screen in advance and the lowrance having the little bitty icon which is harder to see and making these guesses what happens when the boat is turned 90 degrees maintaining this very slow speed ? im guessing that both units would require that there be a breath increase in speed because the humminbird donut and the lowrance making guesses. now it seems to me that if im already going ,let say south west and i already no way in advance were thats taking me by looking at the nav. screen that i wont need to keep looking for that triangle thingy that yall are getting all upset about. i would think that the main focus would be keeping the lines on the poles to stay as vertical as possible while maintaining the desired coarse until making a desired coarse change.

You can make a long Icon (course projection) on the Lowrance if you turn it on there hotdog. No one mentioned 90 degree turns and my boat want turn 90 degrees. it turns in an arc when moving. This movement would take time to recompute per say since you are changing course and direction. We have been talikng slow trolling below .5 mph or approaching a waypoint, not 90 degrees, or 180 degrees (backing up). Get a Trimble if you need to do this maneuver. However, you have to pay for air time to get the accuracy.


previous post comment for you kozmo.

The lowrance with LCG4000 external will track below .4mph as long as you are heading in a relative direction. Sudden changes causes hesitations in position on the map as described by Catfan. Takes the processor time to figure things out. You can add a Fluxgate compass to the nmea2000 for about 800 bucks. It shows which way you are heading instantly and don't care much about you speed.

Ment to add that Interphase Inc. makes a foward loooking sonar that could hlep.

Last edited by Cane Pole; 01-11-2012 at 11:01 AM.

Boohoo boohoo boohoo

Never said anything about staying on top of a brushpile, I said, and I repeat. I slow troll accurately below .4mph. But then, I know how to navigate with a stick,and 4 rocks. Or the big dipper and the crescent moon. Try it. Learnt it boy scouts. Lernt how to navigate with just a compass too and also a map and a compass. I am ready for Al Gore's armmageddon.