Hi,
Pairing (connection) disconnected when Master and Slave boards placed closely about 3cm as attached picture. I found this issue on custom board and reproduced on CC85XXDK. This issue can't be found on CC85XXEM (without CC2590) and if I reduce Target TX/RX power to -10dB on PPW also.
Please refer to below test environment and let me know why this issue can be happened.
Project: Preloaded Demo
RF Module: CC85XX-CC2590EM RF Evaluation Modules using pattern antenna.
Thanks,
Shaka