GPS ( GPGGA String Issue ) For reading Longitutde and Latitude

[bilal shareef]

Hello every body,
I am using Holux M-8929 GPS for receiving the Longitude and latitude from it's GPS string. But i am not getting any value of longitude and latitude. and i am not able to figure it out why.
For example, this is the GPGGA String format.

$GPGGA,001038.00,3334.2313457,N,11211.0576940,W,2,04,5.4,354.682,M,-26.574,M,7.0,0138*79

And what I am getting is something like this.

$GPGGA,198456.36,,,,,0,0,,,M,,M,

Can any body help me why i am not getting the Longitude and Latitude Values ???

 

[embRTS]

It seems you have not connected desired Antenna so it's giving value like this You have to use some good GAIN antenna

 

[bilal shareef]

I have attached the antenna to the GPS which was provided my the manufacturer, So i don't think its because of an antenna. Or, their might be a possibility that antenna is faulty. How can i check this ????

 

[embRTS]

Look I also used one GPS module brought from Cooking Hacks i was having the same problem even I have attached the antenna as the same mentioned in their tutorial and antenna was also the same which i was using but values were coming like that only
when i changed the antenna I got correct string
in all format like GPGGA or GPRMC
OR
one thing you make check place the antenna in the open Sky and cover your GPS Module in a box

 

[TiagoRibeiro]

I had this problem. Try to let the tip of the antenna pointed at the sky and wait about 20 minutes.

 

[embRTS]

Ya TIAGO Ribeiro is right wait for some time also to get the correct value

 

[flanello]

Can you get list of satellites and their signal strength that are seen by the device?
Then you could check if the antenna works if it used outside.