868.1 - SF7BW125 to SF12BW125
868.3 - SF7BW125 to SF12BW125 and SF7BW250
868.5 - SF7BW125 to SF12BW125
867.1 - SF7BW125 to SF12BW125
867.3 - SF7BW125 to SF12BW125
867.5 - SF7BW125 to SF12BW125
867.7 - SF7BW125 to SF12BW125
867.9 - SF7BW125 to SF12BW125
Uplink channels 1-9 (RX1)
869.525 - SF9BW125 (RX2 downlink only)
Used in USA, Canada and South America. Frequency band as per definition in LoRaWAN 1.0.3 Regional
To make sure the end node supports all sub band by default. In the OTAA Join process, the end node will
use frequency 1 from sub-band1, then frequency 1 from sub-band2, then frequency 1 from sub-band3, etc
to process the OTAA join.
After Join success, the end node will switch to the correct sub band by:
Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to
Use the Join successful sub-band if the server doesn't include sub-band info in the OTAA Join
Accept message ( TTN v2 doesn't include)
Used in China, Default use CHE=1