Hello everyone, I'm working on a long-distance communication application (>50m).
My hardware is nRF52840, PA/LNA: RFX2401C, ceramic antenna: AN9520-245.
I've achieved a connection range of 50-75m.
The problem is that when I go beyond that range, the connection between the two PCBs is lost, and I can't reconnect within a distance of 4-50m, even though that's the range where communication works well once the connection is established.
I've tried removing the ceramic antenna and using an ipex antenna, but the problem persists. (The two PCBs increased the communication range to 500m, but the reconnection distance is still <=50m).
Regarding firmware: I'm only using example code with PA/LNA.
Below is my reference SCH.
I look forward to your response.
Sincerely,
Thao.