Question about Lowrance iFinder H2O GPS Receiver

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GPS can't find location

The GPS seems to find satellites very slow. Even after it does find a few (around 5 or 6), it can't find the location.
The question mark on the arrow point keeps blinking. I have updated to newer software version 1.1.0 and still can't find its location.
The unit was bought in 2006 and has been used very few times.

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OK 2006 isw3 years ago The battery life is about up! Replace the battery and recharge it to full capacity and your probelms are over

Posted on Jul 22, 2009

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1 Answer

Gps Malfunction


GPS must be able to "See" at least 3 satellites to comprehend it's location. So, make sure you have a clear view of the sky. And keep it switched on for around 5 minutes to allow it to re-align.

Jun 01, 2013 | GPS

1 Answer

Unable to acquire satellites


GPS devices do not work inside buildings or in tunnels. Even outside, high-rise buildings or trees can interfere with GPS signal reception. Car navigation systems do not work through the roof of the car, they need to be mounted to the windshield of the car with free view to the sky, or use an external antenna.
Some cars have metal coating on the windows for sunlight blocking or privacy protection. Such coatings may also block the GPS satellite signals.

Another problem: unlike TV satellites, GPS satellites do not have a fixed position relative to the ground, they move all the time. Your GPS device needs to locate and tune in on four satellites minimum first to start working for you. The scanning of the hemisphere to locate satellites takes several minutes (up to ten on Tomtom devices).

Tomtom devices use a device stored file with precomputed satellite positions to speed up the process to a few seconds. Since the file holds data only for about two weeks, the package "QuickGPSFix" needs to be updated at least once in a fortnight using the Tomtom HOME software, or it will fall back to the slow scanning procedure.

If you do have a different brand of GPS device, please add a comment to this post and I'll try to give further advice.

Jan 06, 2011 | GPS

1 Answer

MY TOMTOM ONE WILL NOT PICK UP A VALID GPS SIGNAL


The Tomtom devices need to locate GPS satellites in the sky in order to work. Unlike TV satellites, these do not have fixed positions but move relatively to the ground. The Tomtom can locate them by scanning the hemisphere, but this takes up to ten minutes after you switch on the device.

To speed up the process, the Tomtom receivers can use a helper file stored on the device. It holds precomputed positional data for the GPS satellites that makes finding them a matter of a few seconds.

However, the file holds precomputed data for some two weeks in advance only. After this period, the Tomtom device has to resort to the slow scanning procedure.

You will need to connect your Tomtom device to a PC with the "Tomtom HOME" software installed, available from the Tomtom company web site. Use the software by following the onscreen instructions to update the package "QuickGPSFix" at least once every two weeks and you will find your device much more swift in establishing GPS connection.

Note also, all GPS devices require clear view of the sky. They do not work inside buildings, in tunnels, through the roof of the car, and even trees or buildings near to the car may compromise GPS reception. Make sure the device is mounted in an area of the windshield where it can "see" the satellites.
Some cars have metallic a coating on the windows (used for sunlight filtering and "can look outside - can't look inside" fancies). There are reports that these coatings also interfere with GPS receivers' ability to receive the satellite signals.

Jan 05, 2011 | Tomtom ONE GPS Receiver

1 Answer

Slow on picking up satelite on nuvi 260w


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  • If your unit is trying to acquire satellites for the first time, it may take longer than normal to establish an initial position. If the unit is powered on and outdoors with a clear view of the sky this should not take more than 3-5 minutes.
  • If your unit has not been used for an extended period of time (more then a month), it may take 3-5 minutes to acquire satellites.
  • If your unit is indoors, it may not acquire satellites. Even standing next to a window indoors will block a majority of the sky which is needed for a device to locate and lock onto a satellite signal.
  • If you have just finished updating the software in your unit or you have performed a master reset, your unit may take 3-5 minutes to acquire while outdoors as the data that is used to locate satellites may have been erased.
  • If your unit has traveled over 500 miles while turned off or not tracking your travel, it may take 3-5 minutes to acquire even in ideal conditions.
  • If your vehicle has a protective coating on its windshield or electronic devices which interfere with the unit receiving signal, your unit may need an external antenna* in order to acquire satellites.
    • If you suspect this to be an issue, try taking the unit outside of the vehicle with a clear view of the sky for 3-5 minutes so that the unit can acquire satellites. If your unit loses satellites once moved back into your vehicle you will most likely need an external antenna*.
If your unit is still having trouble acquiring satellites, please ensure that it has the latest version of operating software by using our WebUpdater program. Once your unit is updated please allow the unit to acquire satellites outdoors in a stationary position with a clear view of the sky.
*Note: Some units may not be compatible with an external antenna. Please check the Products tab on the external antenna's page to see if your unit is listed.
Good Luck. Did this help?

Dec 03, 2009 | Garmin nuvi 205W GPS Receiver

1 Answer

TomTom slow and sometimes won't configure to satellite


All gps units do not do well trying to find a satellite on the move. You should let your unit locate satellites before you start moving.

Sep 05, 2009 | Tomtom ONE GPS Receiver

1 Answer

Won't locate satellites each time you turn it on.


The GPS does not have a line of sight to the satellites. Relative satellite position may vary somewhat through the year as the Earth wobbles on it axis. Reposition the GPS in your vehicle.

Sep 16, 2017 | Garmin Forerunner 205 Gps Running Watch

1 Answer

Garmin summit hc seems to be off by more than 300 feet


First of all make sure your etrex is not set up to follow roads (if it has that facility). Maps are not always accurate particularly edges of lakes and forest boundaries. If your etrex can only see a few satellites then accuracy will be degraded. Make sure your body is not shielding the view of the satellites by holding the unit away from you. The accuracy of any GPS is affected by the relative position of the satellites with respect to each other. If they appear (at your location) to be in a straight line then your GPS cannot perform the trigonometrical calculations to determine your position with any accuracy. In GPS speak this is called DOP - Dilution Of Precision and can result in variable accuracy from +/-5m at best to +/-30m or worse.
HTH
Peter

Jan 17, 2009 | Garmin eTrex Summit GPS Receiver

2 Answers

Cobra GPS 500


Regardless of which GPS unit you use, finding sufficient satellites can be difficult if you are working in an area with trees/mountains/hills or other obstacles. Here are some suggestions to locking onto satellites:

1.) Mission Planning. If you think you're going to be working in a tricky area, but sure to check mission planning. This software allows you to input a location and obstacles, and gives you the times when satellites will be best.

2.) Wait. It takes the GPS units varying amounts of time to "find" satellites, but if satellites are visible, the unit should lock on within 5 minutes.

3.) Move. If possible, move into an area that has a clearer view of the sky.

4.) Face south. This is especially important if you are using the GeoXT. Turn the GPS antenna so that it is facing the southern sky. The majority of satellites have their orbit so that they appear in our southern sky. There are also satellites in the east and west, and almost no satellites to the north.

5.) Rotate around. If facing south doesn't work, slowly rotate the GPS around 360 degrees.

Oct 22, 2008 | Cobra GPS500 GPS Receiver

1 Answer

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Your battery is dead, which is causing the problem with "slow to receive satellites". Normally when you turn off the unit it will remember the last location and time, then the next time you start the unit it already has the time and current location to acquire satellites, but with a dead battery it has to start from scratch. Check the screen and see if it says "Locating Satellites" or "Acquiring Satellites". Locating satellites will take longer. Replace the battery and your problems should go away.

Jul 22, 2008 | Garmin StreetPilot C330 GPS Receiver

1 Answer

GPS not able to lock (SNR often 0, sometime in thee 5-10 range)


Me again...I took the unit apart and found out that there is a coax cable between the back board and the middle board. The cable has plug in connectors (v. small size) and the female connectors are soldered SMT on the boards. They are coming out quite easy..so one of them was literally ripped off the board. I soldered it with quite a fine iron,did a reset and I am back in business.....as a footnote my readings in AZ /El were all zeros!!!!

May 21, 2007 | Magellan RoadMate 700 GPS Receiver

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