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1	1	(% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
2		- **Contents：**
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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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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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134	134	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.
135	135	)))
136	136
	133	+(((
	134	+
	135	+)))
137	137
138	138	(((
139	139	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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149	149	)))
150	150	* (((
151	151	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)
152		-
153		-
154	154	)))
155	155
156	156	== 3.3 CN470-510 (CN470) ==
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244	244
245	245	== 3.8 MA869 ==
246	246
247		- Country: Morroco
248		-
249	249	* Uplink:
250	250	** 869.1 - SF7BW125 to SF12BW125
251	251	** 869.3 - SF7BW125 to SF12BW125
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265	265
266	266	Used in USA, Canada and South America.
267	267
268		-
269	269	=== 3.9.1 Before [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]]. ===
270	270
271	271	Default use CHE=2, Subband 2
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310	310	)))
311	311	* (((
312	312	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)
313		-
314		-
315	315	)))
316	316
317	317	= 4. Frequency Bands for different server =