I am using a RAK5146 concentrator (SX1303-based) with ChirpStack Gateway OS 4.7.0 Full (for Raspberry Pi).
I modified the configuration files (region_eu868.toml, chirpstack-concentratord.toml, chirpstack-gateway-mesh.toml) to add 869.5 MHz as an extra channel, intending to operate in the LoRaWAN P-band (869.4–869.65 MHz) where higher transmit power (up to 27 dBm) and 10% duty-cycle is allowed. In the European Regulation (EU868)
After applying these changes, the ChirpStack Concentratord service crashes or fails to fully initialize.
Details of the changes:
In region_eu868.toml:
Removed 867900000 Hz from regions.gateway.channels.
Added 869500000 Hz to regions.gateway.channels.
Removed 867900000 Hz from regions.network.extra_channels.
Added 869500000 Hz to regions.network.extra_channels.
In chirpstack-gateway-mesh.toml:
Configured mesh communication to operate on 869500000 Hz.
In chirpstack-concentratord.toml:
Updated to match the new regional plan.
Theoretically, the RAK5146 is able to use the LoRaWAN P-band and it is legal to do so. So why is this not working?