Dragino LT22222-L User Manual

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LT Series LoRa IO controller User Manual 37 / 42
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
Because the end node is now hopping in 72 frequency, it is makes the devices hard to Join the
TTN network and uplink data. To solve this issue, user can access the device via AT Command and
run:
AT+CHE=2
ATZ
to set the end node to work in 8 channel mode. The device will work in Channel 8-15 & 64-71 for
OTAA, and channel 8-15 for Uplink.
AU915 is similar. Below is the AU915 Uplink Channels.
CHE
AU915 Uplink Channels(125KHz,4/5,Unit:MHz,CHS=0)
0
ENABLE Channel 0-63
1
915.2
915.4
915.6
915.8
916
916.2
916.4
916.6
Channel 0-7
2
916.8
917
917.2
917.4
917.6
917.8
918
918.2
Channel 8-15
3
918.4
918.6
918.8
919
919.2
919.4
919.6
919.8
Channel 16-23
4
920
920.2
920.4
920.6
920.8
921
921.2
921.4
Channel 24-31
5
921.6
921.8
922
922.2
922.4
922.6
922.8
923
Channel 32-39
6
923.2
923.4
923.6
923.8
924
924.2
924.4
924.6
Channel 40-47

Dragino LT22222-L Specifications

General

Brand	Dragino
Model	LT22222-L
Category	Controller
Language	English