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1	1	(% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
2		- **Contents：**
	2	+
3	3
4	4	{{toc/}}
5	5
6		-
7		-
8		-
9	9	= 1. Introduction =
10	10
11	11	This page list the default frequency band for Dragino End Devices. The frequency bands are base on TTN Frequency Bands. User can modify upgrade firmware to support different frequency band or use AT Command to change the sub band in some frequency bands.
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13	13	* TTN Frequency Band Settings: [[https:~~/~~/www.thethingsnetwork.org/docs/lorawan/frequency-plans.html>>url:https://www.thethingsnetwork.org/docs/lorawan/frequency-plans.html]]
14	14	* Frequency Bands vs Country List : Page 11 of [[LoRaWAN Regional Parameters RP2-1.0.3>>url:https://resources.lora-alliance.org/technical-specifications/rp2-1-0-3-lorawan-regional-parameters]]
15	15
16		-
17		-
18	18	= 2. OTAA Join Behaviour =
19	19
20	20	For 005 LoRaWAN stack: to save battery, once boot, device will make first make 200 tries for OTAA Join, the time period of two Join Requests will depends on the DR and the airtime requirement. After this 200 Join finish, device will send a join request every 20 minutes. If device reboot, it will do above loop again.
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26	26	* EU868 OTAA Join DR select. SF7->SF8->SF9->SF10->SF11->SF12; Each 3 attempts and then loop
27	27	* US915 and AU915 OTAA Join procedure,. End node by default will use all 72 channels to join and it will be set to use the proper sub-band after Join success
28	28
29		-
30		-
31	31	= 3. Default Frequency Bands =
32	32
33	33
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44	44	)))
45	45
46	46
	40	+
47	47	=== 3.1.2 AS920-923 & AS923-925 : AS923-1 (AS923) ===
48	48
49	49	* Default Uplink channel:
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71	71	** Uplink channels 1-8 (RX1)
72	72	** 923.2 - SF10BW125 (RX2)
73	73
74		-
75		-
76	76	=== 3.1.3 AS923-2 ===
77	77
78	78	* Default Uplink channel:
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85	85	** Uplink channels 1-8 (RX1)
86	86	** 921.4 - SF10BW125 (RX2)
87	87
88		-
89		-
90	90	=== 3.1.4 AS923-3 ===
91	91
92	92	* Default Uplink channel:
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136	136	** 927.5 - SF7BW500 to SF12BW500
137	137	** 923.3 - SF12BW500(RX2 downlink only)
138	138
139		-(((
140	140	There is a issue if the end node is fixed at sub-band2. The sensor won't be able to register to other sub-band and can only works for the LoRaWAN server use sub-band2 , such as TTN. To solve this, user need to use a USB-TTL adapter to connect to the end node to manually set the sub-band which is very inconvinient.
141		-)))
142	142
143		-
144		-(((
145	145	So since **Since [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]]**, 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.
146		-)))
147	147
148		-
149		-(((
150	150	After Join success, the end node will switch to the correct sub band by:
151		-)))
152	152
153		-* (((
154		-Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
155		-)))
156		-* (((
157		-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)
	135	+* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
	136	+* 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)
158	158
159		-
160		-)))
161		-
162	162	== 3.3 CN470-510 (CN470) ==
163	163
164	164	Used in China, Default use CHE=1
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250	250
251	251	== 3.8 MA869 ==
252	252
253		- Country: Morroco
254		-
255	255	* Uplink:
256	256	** 869.1 - SF7BW125 to SF12BW125
257	257	** 869.3 - SF7BW125 to SF12BW125
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271	271
272	272	Used in USA, Canada and South America.
273	273
274		-
275	275	=== 3.9.1 Before [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]]. ===
276	276
277	277	Default use CHE=2, Subband 2
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316	316	)))
317	317	* (((
318	318	Use the Join successful sub-band if the server doesn't include subband info in the OTAA Join Accept message ( TTN v2 doesn't include)
319		-
320		-
321	321	)))
322	322
323	323	= 4. Frequency Bands for different server =