been having this problem since update my phone to latest firmware

how to know u lockon using agps or internal


This post has been edited by trio: Nov 4 2009, 09:47 PM

depends did u turn on a-gps via location?

if yes its using a-gps

I enable always ask. So i can choose to use or dont

why is my signal 3G?
and not the antenna ?

GPS Lock Time - Explained

My does my GPS take a long time to lock up sometimes and other times it locks up Quickly. Why is this? My GPS locks up to satellites very quickly when I am not moving the car. However, when the car is moving and I turn on the GPS, it may take several minutes to lock. Why is that?

Answer:
A GPS that has been off for more than some short length of time must receive a complete navigation message from at least four different satellites before it can achieve 3D lock and start tracking your position. When your vehicle is sitting still and/or you are "out in the clear" with a good view of the sky, the signals received by your GPS from the satellites are relatively stable.

However, when you are moving the car or walking along with your GPS, you may be: making turns, traveling under trees, in and out of the shadow of tall buildings, going under highway underpasses, passing large trucks and other reflecting and signal blocking objects. Walking or driving along under trees or in mountains, or when you are making frequent turns, you may be causing the GPS signal to "come and go" thus disrupting the continuous flow of data to your GPS from a particular satellite. Any of these events and objects can cause your GPS signal to "flutter" and become momentarily unreadable. When this happens, your GPS fails to receive all of the data bits needed to lock during a single navigation message transmission. When this happens, the GPS must attempt to receive these 30 second message streams over and over until it has collected navigation messages from at least four GPS satellites error free. This can take a LONG TIME if the signal flutter is bad enough.

Compared to the newer 12 channel parallel receivers, the older single channel multiplexing GPS receivers (such as the Garmin 45/40/38 series, and dual channel receivers (such as Magellan GPS 2000/3000/4000, the Magellan Pioneer and GPS 300) are much more prone to problems locking when the signal is "chopped" (by trees, buildings, mountains, multipath reflections, etc.). This is because the scanning receivers must have at least 2 or 4 times more "error free signal listening time" than the parallel 12 channel receivers to achieve error free data from 4 SVs.

Some additional data:
The satellites broadcast two types of data, Almanac and Ephemeris. Almanac data is course orbital parameters for all SVs. Each SV broadcasts Almanac data for ALL SVs. This Almanac data is not very precise and is considered valid for up to several months. Ephemeris data by comparison is very precise orbital and clock correction for each SV and is necessary for precise positioning. EACH SV broadcasts ONLY its own Ephemeris data. This data is valid for a period of time (maybe several hours) as determined by information contained in the broadcast. The Ephemeris data is broadcast by each SV every 30 seconds.

http://gpsinformation.net/main/slowlock.htm

This post has been edited by Xploit Machine: Nov 4 2009, 09:54 PM

Hmm i dun see that option

we know how gps works sir. I am saying the newer firmware causing problem with 5800XM GPS

WAT???????

Means u are within a 3G area. Your phone capable to connect to the internet at 384kbps

mien works good .. everywer arnd shah alam .. less than 5minutes, im using the latest firmware .. Garmin XT 5 + Malsing maps

Used the GPS today at Shah Alam toll there. Accurate positioning and also fast locked.

Still cannot sign the HelloOX2

.. shah alam residence are very lucky ..

mate, see my video tut few pages back for sign video tut

i still cant find the agps setting lol

MENU > APP > LOCATION > POSITIONING METHODS

This post has been edited by aspire2oo6: Nov 4 2009, 10:05 PM

It's under Apps > Location > Positioning > Positioning Methods.

Ok. Will try that later.

This post has been edited by XiuKeong: Nov 4 2009, 10:06 PM

guys i got this problem where i can't enter symbols in my garmin
when i accidentally click the enter symbol page it doesn't exit
anyone got ideas?

btw using 5.00.50

oh thanks. i thought i was using 3g line
new 5800xm user here

Menu -> Location - positioning - positioning method - assisted gps

No wonder i been looking in garmin XD

eik...its ticked. I think been locking using agps~ T_T

so means u always get fast lock and been paying ever since till today