TESEO LIV3R no coordinates

[AMoro.16]

Hello. I've developed the board based on TESEO LIV3R module. I have successfully developed and debug code on X-NUCLEO GNSS1A1 and it get position from the GNSS receiver perfectly. When I run the same code on my board, I receive NMEA messages with 0. No position, no speed, no time, 99 satellites..

I attached my schematic. I use chip antenna 1575AT43A0040E. Can anyone help, what is wrong?

[DZhou.1]

Check out antenna connection for the GPS first. Or try it outside the building.
David

[Tesla DeLorean]

Not going to fish part# out of bitmaps.

Check that your RF amplifier is powered and enabled, check logic state on pins.

You could try injecting RF at various points from a known working GNSS antenna source you've got powered via a splitter.

You could check circuit/antenna tuning with a network analyzer.

Be outside to get the best signals, avoid the human body in proximity to the chip antenna.

Perhaps consult with an ST GNSS FAE

[AMoro.16]

Thank you for the answer. Outside the building situation is the same. What do you mean under "Check out antenna connection for the GPS first"?

[GQuin.2]

Did you manage to solve it? I'm about to use this GNSS but I'm not sure if it will work with passive antenna