Printable View
I have a new HB 788 HD DI. Only 6 hours on it. Seems like it takes my unit a long time to acquire all the Satellites and it jumps around from .1 mph to over 1 mph while the boat is sitting still on the trailer. The 998 on the console stays locked down at 0.
Any ideas as to what my be causing this.
Made in Mexico?:popcorn
No way Cane Pole: made right here at 678 Humminbird Lane, Eufaula, Alabama, USA.Quote:
Originally Posted by Cane Pole
N 31.849149°
W -85.146829°
Wiskers, when the unit finally locks onto the satellites, what does the GPS Diagnostics View show for the number of satellites being tracked, the Fix Type and the Estimated Position Error?Quote:
Originally Posted by Wiskers
Is the unit mounted so that there is nothing blocking the GPS Receiver (in the upper right hand corner of the unit) from receiving signals from the satellites?
I just installed this unit last time I was in off the boat (June). I have only had it out 1 time. It was doing the same thing when I had it out on the water.Quote:
Originally Posted by Humminbird_Greg
I have it linked to my new 998 via Ethernet cable.
I updated the software on both units on the 6th. Both units have the 6.450 (I believe that is correct).
I took the boat out in the open & turned both units on. Total unobstructed view of the sky. The best I could get after 30 minutes was 7 to 8 satellites on the 788. Finally showed 3D FIX after awhile. The best error showed about 19 feet but hung in the 25' to 29' range most of the time.
I then went into my network settings & changed the GPS receiver over to the 998's. It then showed 11 to 13 Sats. and Enhanced with the best error being 2'.
I also have a problem with the Simulation Mode. When I hook it up to my power supply it doesn't show any depth or 2D or DI images. Everything else shows up. When I put it on its base and it's hooked up to the ducer, the Simulation works properly.
Get'n a little frustrated with this thing.
Just reset the defaults & got the "Simulation issue" Corrected.
Wiskers, sounds like the internal GPS Receiver may not be working right. Try calling the Humminbird Customer Resource folks to get it straightened out. 1-800-633-1468Quote:
Originally Posted by Wiskers
It was a joke. Ya know like jumpin' beans......Quote:
Originally Posted by Humminbird_Greg
Woosh! That one went right over my head Cane Pole… It’s been a long time since I heard about Mexican jumping beans! rotflQuote:
Originally Posted by Cane Pole
I thought it may have been a reference to some other company’s manufacturing locations.
I have a 788 ci HD, and the gps on my unit is jumpy at best too, and I get the donut/red circle when longlining at .5mph up to .9mph. The mph is seldom steady when compared to a garmin HH, which matches my Ipilot 99.99% of the time. I've gotten the donut from day one, and have the latest update, X.250 I think. Dont remember the "X" number.
How much "clearance" does the HB units with internal antennas need to lock in.
About 2 weeks ago, it took my 788 about 10 minutes or so to lock on, and still had the donut.
I can understand the speed jumping around as we report what the GPS Receiver calculates (we do not massage the data through software as much as others do). What has me worried with Wiskers’ unit is the long lock in times, low number of satellites being tracked and large estimated position number.
The unit will display a red circle whenever it does not know that the boat is moving (usually over 1.5 mph).
The internal GPS Receiver needs an unobstructed sight of the surrounding satellites. So the clearance would be at about 5 degrees above the horizon in a 360 degree circle – same as the external GPS Receivers.
I had a brand new 798 that did the exact same as this one is doing right out of the box. I sent it in & they put a new receiver in it & it worked like a charm (except for the DONUT)!
I'm wondering how many channels does the internal antenna use...16?..50?...(I cant find it in the specs)...
Maybe adding an external antenna for the 788 would increase usability...??
Rickie
Sorry guys, got the numbers mixed up in my pea-brain. :confused:Quote:
Originally Posted by Humminbird_Greg
That should have been at speeds below 0.9MPH.
i had the same problem on my 787c2i sent it back to humminbird twice and it still did the same thing jumpy gps finally joby told me to try a external gps reciever hooked to it and it solved the problem hope this helps