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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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130	130	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.
131	131	)))
132	132
133		-(((
134		-
135		-)))
136	136
137	137	(((
138	138	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.
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148	148	)))
149	149	* (((
150	150	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	+
	154	+
151	151	)))
152	152
153	153	== 3.3 CN470-510 (CN470) ==
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175	175	** 508.1 - SF7BW125 to SF12BW125
176	176	** 505.3 - SF12BW125 (RX2 downlink only)
177	177
	182	+
178	178	== 3.4 EU863-870 (EU868) ==
179	179
180	180	* Uplink:
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206	206	** Uplink channels 1-3 (RX1)
207	207	** 866.550 - SF10BW125 (RX2)
208	208
	214	+
209	209	== 3.6 KZ865 ==
210	210
211	211	* Uplink ~-~- 125Khz , DR0 - DR5
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219	219	** The RX1 receive window uses the same channel as the preceding uplink.
220	220	** The RX2 receive window uses a fixed frequency and data rate. The default parameters are 866.7MHz / DR0 (SF12, 125 kHz)​
221	221
	228	+
222	222	== 3.7 KR920-923 (KR920) ==
223	223
224	224	* Default channel:
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239	239	** Uplink channels 1-7(RX1)
240	240	** 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
241	241
	249	+
242	242	== 3.8 MA869 ==
243	243
	252	+ Country: Morroco
	253	+
244	244	* Uplink:
245	245	** 869.1 - SF7BW125 to SF12BW125
246	246	** 869.3 - SF7BW125 to SF12BW125
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256	256	** Uplink channels 1-9 (RX1)
257	257	** 869.525 - SF12BW125 (RX2 downlink only)
258	258
	269	+
259	259	== 3.9 US902-928 (US915) ==
260	260
261	261	Used in USA, Canada and South America.
262	262
	274	+
263	263	=== 3.9.1 Before [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]]. ===
264	264
265	265	Default use CHE=2, Subband 2
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285	285	** 927.5 - SF7BW500 to SF12BW500
286	286	** 923.3 - SF12BW500(RX2 downlink only)
287	287
	300	+
288	288	=== 3.9.2 Latest firmware, Since [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]] ===
289	289
290	290	(((
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304	304	)))
305	305	* (((
306	306	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	+
307	307	)))
308	308
309	309	= 4. Frequency Bands for different server =