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1	1	(% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
2		-
	2	+ **Contents：**
3	3
4	4	{{toc/}}
5	5
	6	+
	7	+
	8	+
6	6	= 1. Introduction =
7	7
8	8	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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10	10	* TTN Frequency Band Settings: [[https:~~/~~/www.thethingsnetwork.org/docs/lorawan/frequency-plans.html>>url:https://www.thethingsnetwork.org/docs/lorawan/frequency-plans.html]]
11	11	* 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]]
12	12
	16	+
13	13	= 2. OTAA Join Behaviour =
14	14
15	15	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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21	21	* EU868 OTAA Join DR select. SF7->SF8->SF9->SF10->SF11->SF12; Each 3 attempts and then loop
22	22	* 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
23	23
	28	+
24	24	= 3. Default Frequency Bands =
25	25
26	26
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37	37	)))
38	38
39	39
40		-
41	41	=== 3.1.2 AS920-923 & AS923-925 : AS923-1 (AS923) ===
42	42
43	43	* Default Uplink channel:
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65	65	** Uplink channels 1-8 (RX1)
66	66	** 923.2 - SF10BW125 (RX2)
67	67
	72	+
68	68	=== 3.1.3 AS923-2 ===
69	69
70	70	* Default Uplink channel:
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77	77	** Uplink channels 1-8 (RX1)
78	78	** 921.4 - SF10BW125 (RX2)
79	79
	85	+
80	80	=== 3.1.4 AS923-3 ===
81	81
82	82	* Default Uplink channel:
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126	126	** 927.5 - SF7BW500 to SF12BW500
127	127	** 923.3 - SF12BW500(RX2 downlink only)
128	128
	135	+(((
129	129	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.
	137	+)))
130	130
	139	+
	140	+(((
131	131	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.
	142	+)))
132	132
	144	+
	145	+(((
133	133	After Join success, the end node will switch to the correct sub band by:
	147	+)))
134	134
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)
	149	+* (((
	150	+Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
	151	+)))
	152	+* (((
	153	+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)
137	137
	155	+
	156	+)))
	157	+
138	138	== 3.3 CN470-510 (CN470) ==
139	139
140	140	Used in China, Default use CHE=1
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160	160	** 508.1 - SF7BW125 to SF12BW125
161	161	** 505.3 - SF12BW125 (RX2 downlink only)
162	162
	183	+
163	163	== 3.4 EU863-870 (EU868) ==
164	164
165	165	* Uplink:
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191	191	** Uplink channels 1-3 (RX1)
192	192	** 866.550 - SF10BW125 (RX2)
193	193
	215	+
194	194	== 3.6 KZ865 ==
195	195
196	196	* Uplink ~-~- 125Khz , DR0 - DR5
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204	204	** The RX1 receive window uses the same channel as the preceding uplink.
205	205	** The RX2 receive window uses a fixed frequency and data rate. The default parameters are 866.7MHz / DR0 (SF12, 125 kHz)​
206	206
	229	+
207	207	== 3.7 KR920-923 (KR920) ==
208	208
209	209	* Default channel:
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224	224	** Uplink channels 1-7(RX1)
225	225	** 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
226	226
	250	+
227	227	== 3.8 MA869 ==
228	228
	253	+ Country: Morroco
	254	+
229	229	* Uplink:
230	230	** 869.1 - SF7BW125 to SF12BW125
231	231	** 869.3 - SF7BW125 to SF12BW125
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241	241	** Uplink channels 1-9 (RX1)
242	242	** 869.525 - SF12BW125 (RX2 downlink only)
243	243
	270	+
244	244	== 3.9 US902-928 (US915) ==
245	245
246	246	Used in USA, Canada and South America.
247	247
	275	+
248	248	=== 3.9.1 Before [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]]. ===
249	249
250	250	Default use CHE=2, Subband 2
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270	270	** 927.5 - SF7BW500 to SF12BW500
271	271	** 923.3 - SF12BW500(RX2 downlink only)
272	272
	301	+
273	273	=== 3.9.2 Latest firmware, Since [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]] ===
274	274
275	275	(((
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289	289	)))
290	290	* (((
291	291	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)
	321	+
	322	+
292	292	)))
293	293
294	294	= 4. Frequency Bands for different server =