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RS485 to LoRaWAN Converter User Manual 24 / 29
5.3 How to set up RS485-LN to work in other 8 channel mode in US915, AU915,
CN470 bands?
By default, the frequency bands US915, AU915, CN470 works in 8~15 (CHE=2) frequencies. User
can set to the frequencies to work in other channels, by using the AT+CHE command.
For example, in US915 band, the frequency table is as below. By default, end node will use all
channels (8~15) for OTAA Join process. After OTAA JOINED, end node will use these channels
(8~15) to send uplink packets.
CHE
US915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0)
0
ENABLE Channel 0-63
1
902.3
902.5
902.7
902.9
903.1
903.3
903.5
903.7
Channel 0-7
2
903.9
904.1
904.3
904.5
904.7
904.9
905.1
905.3
Channel 8-15
3
905.5
905.7
905.9
906.1
906.3
906.5
906.7
906.9
Channel 16-23
4
907.1
907.3
907.5
907.7
907.9
908.1
908.3
908.5
Channel 24-31
5
908.7
908.9
909.1
909.3
909.5
909.7
909.9
910.1
Channel 32-39
6
910.3
910.5
910.7
910.9
911.1
911.3
911.5
911.7
Channel 40-47
7
911.9
912.1
912.3
912.5
912.7
912.9
913.1
913.3
Channel 48-55
8
913.5
913.7
913.9
914.1
914.3
914.5
914.7
914.9
Channel 56-63
Channels(500KHz,4/5,Unit:MHz,CHS=0)
903
904.6
906.2
907.8
909.4
911
912.6
914.2
Channel 64-71
When user uses the TTN network, the US915 frequency bands use are:
 903.9 - SF7BW125 to SF10BW125
 904.1 - SF7BW125 to SF10BW125
 904.3 - SF7BW125 to SF10BW125
 904.5 - SF7BW125 to SF10BW125
 904.7 - SF7BW125 to SF10BW125
 904.9 - SF7BW125 to SF10BW125
 905.1 - SF7BW125 to SF10BW125
 905.3 - SF7BW125 to SF10BW125
 904.6 - SF8BW500
If user want to hopping is all channels. , user can access the device via AT Command and run:
AT+CHE=0
ATZ
to set the end node to work in all 72 channel mode.