RUTX50 GPS not Working

[ramshadow]

Hi,

I have a RUTX50 with firmware RUTX_R_00.07.07.1

I can not get a GPS Signal.

ubus call gsm.modem0 info | grep gps
“gps_port”: “/dev/ttyUSB1”,

Sometimes I getting:

cat /dev/ttyUSB1
$GPGGA,0,66
$GAGGA,0,77
$GPVTG,T,M,N,K,N2C
$GAVTG,T,M,N,K,N3D
$GPRMC,V,N,V29
$GARMC,V,N,V38
$GPGSA,A,1,*32
$GAGSA,A,1,*23
$GPGGA,0,66
$GAGGA,0,77
$GPVTG,T,M,N,K,N2C
$GAVTG,T,M,N,K,N3D

Sometimes I get:

cat /dev/ttyUSB1
$GPGSV,4,1,13,05,25,063,23,18,61,164,20,28,23,205,22,31,40,236,28,16D
$GPGSV,4,2,13,04,04,302,09,03,337,16,27,299,20,14,035,16D
$GPGSV,4,3,13,23,25,12,130,26,65,279,27,06,261,15B
$GPGSV,4,4,13,29,48,071,157
$GPGGA,0,66
$GAGGA,0,77
$GPVTG,T,M,N,K,N2C
$GAVTG,T,M,N,K,N3D
$GPRMC,V,N,V29
$GARMC,V,N,V38

If I connect the antenna to my RUTX11 I get a GPS signal.

If have tested the Antenna with my antenna analyzer, show okay.

ubus call gsm.modem0 get_nmea ‘{“satellite”: “gpsnmeatype”}’
{
“types”: [
{
“type_id”: 2,
“type”: “gsv”
},
{
“type_id”: 3,
“type”: “gsa”
},
{
“type_id”: 5,
“type”: “gga”
},
{
“type_id”: 6,
“type”: “rmc”
},
{
“type_id”: 7,
“type”: “vtg”
}
]
}

What can I do?

[Marijus]

Hello,

If your antenna has a clear view of the sky and is not blocked by anything, you should check whether the antenna is correctly soldered and free from any visual damage. Additionally, the GPS on our devices is an active GPS, which means it is supplied with additional voltage to enhance the received signal. You can verify this with a voltmeter, reading should be 3.3V.

You should also check whether enough satellites are visible for a GPS signal using the following command:

gpsctl -p

For normal operation, at least four satellites should be present.

Best regards,

[Mattk]

If you have the Satellite Configuration for Galileo, Glonass and BeiDou Enabled, try Disabling all three. Firmware RUTX_R_00.07.07.1 is not an issue.

[EdKok]

Same here. Receiver is outside; doesn’t work al all.