Thread: Humminbird gps factory problem

Alamance at least he moves with you when we fish together I think he turns it off.lol:-D

My 898 side scannng HD has always jumped around. Had about 3 years now. My old 500 series chartplotter worked 10 times better. Some model external antenna. I've tried different apps on my phone and none of them will do anything less than 1mph. I just go by the bend in the line most of the time and what notch I have it on my trolling motor. Like you said. It not worth anything below 1 mph. Even above 2 mph... it still jumps around. I just take the average speed and ignore the jumps.

Originally Posted by sundance

My 898 side scannng HD has always jumped around. Had about 3 years now. My old 500 series chartplotter worked 10 times better. Some model external antenna. I've tried different apps on my phone and none of them will do anything less than 1mph. I just go by the bend in the line most of the time and what notch I have it on my trolling motor. Like you said. It not worth anything below 1 mph. Even above 2 mph... it still jumps around. I just take the average speed and ignore the jumps.

Unless you are fishing on a perfectly calm day no wind what so ever and going in a perfectly straight line, your gps speed is going to vary. when you are talking tenths of a mph it dosent take much to make it change. Ive seen it go from 1 mph to 2 tenths of a mph on one wind guest. So no matter what you do you are going to have gps speed variances. just my

Originally Posted by clfarms1

Unless you are fishing on a perfectly calm day no wind what so ever and going in a perfectly straight line, your gps speed is going to vary. when you are talking tenths of a mph it dosent take much to make it change. Ive seen it go from 1 mph to 2 tenths of a mph on one wind guest. So no matter what you do you are going to have gps speed variances. just my

I agree. I was speaking of a calm day. Thanks for the info.

I have the 798 and can't use it on my trolling motor at all. I've tried everything I know or have been told to do. Motor not running it works okay start motor and it goes fuzzy. Hope this year to replace with a lowrance that I know is good proruct.
Just Saying.

Originally Posted by billyniten

I have the 798 and can't use it on my trolling motor at all. I've tried everything I know or have been told to do. Motor not running it works okay start motor and it goes fuzzy. Hope this year to replace with a lowrance that I know is good proruct.
Just Saying.

Are they both connected to the same battery . I have a little interference while running the trolling motor

Originally Posted by Lynn Cook

My 798 worked good till I done a update, then my GPS went out, I found that the update must have turned mine off. After searching the web for answers I started to send mine back until I read somewhere to try turning the GPS off then reboot the unit and turn it back on. When I found the settings it was off in 2 areas I turned them on and it is working now. As far as speed mine says 0.5 setting still and has since it was new 4 years ago.

My 768 has done almost the same since I turned it on the first time. Mine registers .3, just have to remember to subtract .3 and all is good.

Originally Posted by billyniten

I have the 798 and can't use it on my trolling motor at all. I've tried everything I know or have been told to do. Motor not running it works okay start motor and it goes fuzzy. Hope this year to replace with a lowrance that I know is good proruct.
Just Saying.

Have you used a separate battery for the 798? My 798 did the same thing; I connected it to a separate battery and it now works perfect. When I proved that the isolated battery solved the problem, I bought a small gel-cell battery from Batteries-Plus. I only have to recharge it once-in-awhile. For what it's worth, IMO, save your money, the 798 is as good, or better, than the Lowrance. B-