RAK831 TX power

Hi I want to increase tx power of RAK831, I found this document which seems to be the indicated for this case but I don’t understand how to do it. Could you help me?

http://docs.rakwireless.com/en/LoRa/RAK831-LoRa-Gateway/Software-Development/How%20to%20tuning%20RAK831%20to%20Tx%20Power%20as%2029dbm.pdf

the best way is using RAK2245 PI hat which tx power is 27dbm. The RAK831 before is 25dbm around

ken

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