ChirpStack Japan and BasicMAC configuration

Devices
1

I am using a device with atmega mcu and BasicMAC arduino library. It is working great with default parameters of ChirpStack for EU868.

The device works very well in Europe with frequencies 868MHz but within AS923 Japan it doesn’t work.

I wonder if there is something that I have to configure in Chirpstack, or I have to change some parameter in the Basicmac code. Attached screenshots of the default configurations of EU868 and AS923. I have tried to change AS923_X, change Lorawan version 1.0.2 or 1.0.4, without luck.

I would be grateful if someone could give me any idea.
Thank you

japan
japan1557×807 10 KB

eu
eu1558×729 8.68 KB

2

Have you set your source code of the node to AS923?

I have tested the RadioLib ok with ChirpStack + LoRaWAN MAC 1.1.0 + RP002-1.0.3.
Ok with AS923, AS923_2, AS923_3 and AS923_4.
AS923 JP should be OK. AS923 JP has LBT? Not tested btw.