Thingy:91 enabling external GPS antenna.

[Juha]

Hi,

I'm using Thingy:91 and I have built and flash the asset tracker software. I have connected the external GPS antenna (MIKE3A or similar), see picture.

How do I check that the external antenna is used by the modem? How do I activate external antenna? Currently I'm not finding any satellites. I have made same kind of setup for the nRF9160 DK board and its working fine. I have updated also modem firmware.

00:37:10.008,544] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 0 Using: 0 Unhealthy: 0

[0m

[00:37:10.017,669] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 2230

[0m

[00:37:11.008,575] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 0 Using: 0 Unhealthy: 0

[0m

[00:37:11.017,669] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 2231

[0m

[00:37:12.008,605] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 0 Using: 0 Unhealthy: 0

[0m

[00:37:12.017,700] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 2232

[0m

[00:37:13.008,636] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Tracking: 0 Using: 0 Unhealthy: 0

[0m

[00:37:13.017,883] 

[0m<dbg> nrf9160_gps.print_satellite_stats: Seconds since last fix 2233

[0m

Best Regards

Juha

[Heidi-Irene Harvey Sollie]

Hi, yes, you are correct. On Thingy:91 this is necessary when using an active antenna.