Can not receive GPS data by AirPrime® EM7455 M2M Module

It can receive GLGSV data, but can not receive longitude and latitude data.

$GNGSA,A,1,*00
$GPGGA,0,66
$GPRMC,V,N
53
$GLGSV,3,1,10,78,06,014,70,73,347,86,40,322,77,*50
$GLGSV,3,2,10,80,79,09,050,69,22,043,84,18,158,*5E
$GLGSV,3,3,10,85,71,196,71,39,246,*6D
$GPGSV,3,1,09,02,05,28,070,07,04,029,08,*78
$GPGSV,3,2,09,09,13,65,115,15,26,206,16,02,313,*4C
$GPGSV,3,3,09,18,45,272,*4F
$GNGNS,NNN,1D
$GPVTG,T,M,N,K,N
2C
$GPGSA,A,1,*1E
$GNGSA,A,1,*00
$GPGGA,0,66
$GPRMC,V,N
53
$GLGSV,3,1,10,78,06,014,70,73,347,86,40,322,77,*50
$GLGSV,3,2,10,80,79,09,050,69,22,043,84,18,158,*5E
$GLGSV,3,3,10,85,71,196,71,39,246,*6D

Should it use active or passive GPS antenna?

Thanks,
Jie

at!gpsstatus?
Current time: 1980 01 06 6 00:30:48

1980 01 06 6 00:00:00 Last Fix Status = FAIL, FAILCODE = 0
1980 01 06 6 00:29:59 Fix Session Status = ACTIVE

No TTFF available

OK
at!gpsnmeasentence?
!GPSNMEASENTENCE: 0x29FF

OK
at!gpsonly?
!GPSONLY: NOT IMPLEMENTED

OK
at!custom?
!CUSTOM:
GPSENABLE 0x01
IPV6ENABLE 0x01
UIM2ENABLE 0x01
SIMLPM 0x01
USBSERIALENABLE 0x01
SINGLEAPNSWITCH 0x01

Solved it. Because the voltage of active antenna is only 3V.

Hi yanjie,

Please close this thread if the issue you reported is resolved. Thanks.

Hi Yanjie,

Can you please tell me how did you solve the probelm.

How did you set the voltage to 3V.

I tried by running the command AT+WANT=1…but it did not help.

Thanks,
Janaki