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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	17	= 2. OTAA Join Behaviour =
18	18
19	19	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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25	25	* EU868 OTAA Join DR select. SF7->SF8->SF9->SF10->SF11->SF12; Each 3 attempts and then loop
26	26	* 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
27	27
28		-
29	29	= 3. Default Frequency Bands =
30	30
31	31
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42	42	)))
43	43
44	44
	40	+
45	45	=== 3.1.2 AS920-923 & AS923-925 : AS923-1 (AS923) ===
46	46
47	47	* Default Uplink channel:
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69	69	** Uplink channels 1-8 (RX1)
70	70	** 923.2 - SF10BW125 (RX2)
71	71
72		-
73	73	=== 3.1.3 AS923-2 ===
74	74
75	75	* Default Uplink channel:
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131	131	** 927.5 - SF7BW500 to SF12BW500
132	132	** 923.3 - SF12BW500(RX2 downlink only)
133	133
134		-(((
135	135	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.
136		-)))
137	137
138		-
139		-(((
140	140	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.
141		-)))
142	142
143		-
144		-(((
145	145	After Join success, the end node will switch to the correct sub band by:
146		-)))
147	147
148		-* (((
149		-Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
150		-)))
151		-* (((
152		-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)
153	153
154		-
155		-)))
156		-
157	157	== 3.3 CN470-510 (CN470) ==
158	158
159	159	Used in China, Default use CHE=1
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179	179	** 508.1 - SF7BW125 to SF12BW125
180	180	** 505.3 - SF12BW125 (RX2 downlink only)
181	181
182		-
183	183	== 3.4 EU863-870 (EU868) ==
184	184
185	185	* Uplink:
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211	211	** Uplink channels 1-3 (RX1)
212	212	** 866.550 - SF10BW125 (RX2)
213	213
214		-
215	215	== 3.6 KZ865 ==
216	216
217	217	* Uplink ~-~- 125Khz , DR0 - DR5
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225	225	** The RX1 receive window uses the same channel as the preceding uplink.
226	226	** The RX2 receive window uses a fixed frequency and data rate. The default parameters are 866.7MHz / DR0 (SF12, 125 kHz)​
227	227
228		-
229	229	== 3.7 KR920-923 (KR920) ==
230	230
231	231	* Default channel:
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246	246	** Uplink channels 1-7(RX1)
247	247	** 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
248	248
249		-
250	250	== 3.8 MA869 ==
251	251
252		- Country: Morroco
253		-
254	254	* Uplink:
255	255	** 869.1 - SF7BW125 to SF12BW125
256	256	** 869.3 - SF7BW125 to SF12BW125
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266	266	** Uplink channels 1-9 (RX1)
267	267	** 869.525 - SF12BW125 (RX2 downlink only)
268	268
269		-
270	270	== 3.9 US902-928 (US915) ==
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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297	297	** 927.5 - SF7BW500 to SF12BW500
298	298	** 923.3 - SF12BW500(RX2 downlink only)
299	299
300		-
301	301	=== 3.9.2 Latest firmware, Since [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]] ===
302	302
303	303	(((
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317	317	)))
318	318	* (((
319	319	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)
320		-
321		-
322	322	)))
323	323
324	324	= 4. Frequency Bands for different server =