Do I need to use antenna for my ZED-F9P board

[ho_tom2333]

Sorry I am new and I have read through the instruction and hook up guide on how to connect the ZED-F9P.

Do I need to use antenna to connect with the board? Which shall be used if it is needed. It keep sending 0,0 as the coordinate

I am now using raspberry pi 4B to connect with the board with USB-C,

PWR light: on,

PPS light: off,

RTK light: on,

FENCE light off.

https://upload.cc/i1/2022/04/10/O9UEkz.png

[rpiloverbd]

GPS antenna should be connected no matter which controller you use. Otherwise, I found it impossible to get any data.