TESEO-LIV3F gps interface with QN9080 MCU

[Snagu.11]

Hi,

We are using LIV3F module.. We have mounted components as per the schematics (with Part#W3011 as attached). We have tested module on Roof top for 30 minutes (In Hyderabad India). After power on, we are receiving packets GPRMC, GPVTG, GNGSA (as attached). But we are seeing zeros in Lat/Lan. Can you pls help us on trouble shooting steps?

Attached:

Schematics

Logs

Thanks in advance

suraj.N

 

[Tesla DeLorean]

Have you tried using an existing, working antenna system​ and feeding that via a bias-tee or splitter arrangement?

​

I​'d suggest you permanently mount an antenna on the roof, with the clearest view of the sky, and cable that to your lab. Have other receivers you know work to evaluate your progress and benchmark.

[Snagu.11]

Hi Tesla DeLorean,

1.Please recommend permanent mount antenna(#part no) or suggest antenna specifications for that permanent antenna to perform gps testing.

Please suggest ASAP.

Thankyou in advance

Suraj,N.