Question about Garmin Forerunner 305 GPS Receiver

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Only one satellite is enough to find the GPS device location or more satellites are required?

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To determine location at least 4 satelites are needed.
If you know one element( latitude,or height) than 3 are sufficient

Posted on Jan 15, 2009

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2 Answers

Garmin gps 60 can not locate satellite


When you turned it on in the hotel, it is not the Garmin. But if you were outside and could see the clear sky, and the GPS evice did not find the satellites within 2 minutes there could be something wrong.
When you switch of an GPS in one place and you switch it on, on a completely different place, it can take a while till it found enough satellites to make up where it is.
But two minutes should do the trick. Don't try this somewhere inside or close to buildings or trees. The device should have a clear "view" to the satellites above the equator.

Aug 02, 2014 | Garmin 60 GPS Receiver

1 Answer

Does the gps on life360 require both internet and satellite to work


It requires Internet to update maps, install corrections, or additional features. It requires the GPS signals transmitted by the satellites to know where it is and where to go.
If you do not want to update the device you need just the GPS signals. However those satellites may be moving about and theirs positions have to be reported to the device otherwise it will take it longer to lock in on the signals, and might even never find the satellites.

Jan 13, 2014 | GPS Devices

2 Answers

I have a ifinder hunt GPS, it will not locate any satellites, it then prompts me to stop searching or continue to search for satellites. I have been trying this device over the last 10 months, mostly on...


With a normal GPS device, when you first switch it on, it needs some time to locate enough satelites. Most of the time it needs at least 5 satelites. Some time should be like minutes and not hours. After the GPS device fond enough satelites, it knows where it is and can when it is switched on again work faster. When you try to let the GPS search for satelites indoors, or without a free view to the sky, it is possible the receiver never can find satelites at all.
I don't know if any test of the Lowrance iFINDER Hunt GPS was placed on the net, but that is where you can check how long it should take for the GPS to find enough satelites.

Oct 30, 2013 | Lowrance iFINDER Hunt GPS Receiver

1 Answer

Will not find city or locations


Hello.

Solution to the problem.

With the right piece of hardware and software, it ispossible to triangulate your location anywhere on earth using satellitenavigation. These gamin devices cansuccessfully guide you from one place to another, or they can simply use theconnection with the satellite to tell you your exact current location. Thelatter function requires you to know how to locate the GPS device using theoptions onscreen.
1 Purchase a GlobalPositioning System (satellite navigation) product. There are manymanufacturers, including TomTom, NavMan and Garmin.2 Turn on the GPS and leave itfor a minute or so as it establishes a connection between the device and thesatellite.
3 Navigate to the"Current Location" option in the "Tools" or"Settings" menu (the exact pathway to this option depends on whichGPS device you have). The satellite signal will now successfully locate yourGPS device.4 Type a ZIP code or placename once you have located your GPS device. The gamin can now successfully guide you to your finaldestinationThanks.

Sep 18, 2011 | Garmin nuvi 255W GPS Receiver

1 Answer

Says loooking for signal - even when plugged into car charger - could it be the gps battery


Being plug into a car charger (or wall charger) has little to do with not finding a GPS signal and this apply to your gps battery as long as you get power to your receiver.

It is not unusual for GPS to have problem finding suitable Satellites signals especially inside a building or areas where you do not have a clear view of the sky above you and the unit (e.g. High Rise buildings).

In order to speed up the location of satellites signals, you need to update your unit A-GPS Satellite locations database on a regular basis via 'Tom Tom Home' (which should be installed on your PC or Laptop). You can download the latest version of Tom Tom Home from the official site.

Without A-GPS and the unit not being in regular use, your unit may take a very long time to find suitable satellite signals. My own TomtOm One, without an up to date a-gps database has taken over 15 minutes to locate the required signals even in a relatively 'open' air location!

Hope it helps and clarify the issue.

Jun 12, 2011 | Tomtom ONE GPS Receiver

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 Devices

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

Why does my GPS system have a difficult time locating satellites?It says ''acquiring satellites'' for about 5 minutes. Then it says it can't locate satellites. Should it continue trying? Why does it do...


this is what my navigon says about gettting the gps to connect.

Initializing the GPS receiver
In the upper right-hand corner of the display, the GPS symbol appears. As soon as
data from at least 3 satellites is received, the symbol changes to (GPS Ready). Note: If possible, position the device with a clear line of sight to the sky to successfully
receive messages from the GPS satellites.
Note: GPS initialization requires data from at least three satellites. If GPS data is not
available, the receiver will not initialize.
Note: It can take up to 20 minutes to initialize the integrated GPS receiver for the first
time.
Note: Each time you turn on the device, GPS receiver initialization begins. When GPS
data is available, reception starts within one minute.
If the navigation device has been switched to standby for more than a week, the next initialization
can take up to 10 minutes.

Jun 19, 2009 | Garmin GPS Devices

2 Answers

My son is in Houston, Texas and cannot get his unit to turn on! He is trying to find out if your system is down or is his unit broken?


Hello nonjoe869,

Most GPS receivers do not require any network to operate. The satellites calculate their current location based on information received from Global Positioning Satellites. However those satellites operate continuously. The only way that the user would experience an "outage" is to be in a place without a clear view of the sky (underground, in a hardened building, etc.). Even then the GPS would still turn on and many functions would operate. It would just not be able to acquire satellites or issue location reports.

That said, if the GPS is part of another device (such a cell phone) that does require a network, the network status could have an impact on the GPS. A network outtage isn't going to prevent the device from actually turning on, however. If the GPS won't turn on at all it is likely a problem with the GPS or the power source.

Best Regards,
Ken
"Go Ahead. Use Us."

Jun 25, 2008 | GPS Devices

3 Answers

Aquiring satellites


Are you outside with a clear view of the sky? It should find satellites once the unit is turned on. Does it say "Looking for satellites" or "Acquiring satellites"?

If it is "looking for satellites" then it means that the unit have lost all data (time, date, location). If it is "acquiring satellites" then it have date and time, but not location.

Looking for satellites require a longer setup time (could be as much as 15 minutes). Acquiring satellites is much faster (not more than 2 minutes).

Date and time is updated from satellites once the unit gets a satellite lock.

Jan 31, 2008 | Garmin StreetPilot C330 GPS Receiver

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