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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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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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130	130	** 927.5 - SF7BW500 to SF12BW500
131	131	** 923.3 - SF12BW500(RX2 downlink only)
132	132
133		-(((
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		-)))
136	136
137		-
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.
140		-)))
141	141
142		-
143		-(((
144	144	After Join success, the end node will switch to the correct sub band by:
145		-)))
146	146
147		-* (((
148		-Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
149		-)))
150		-* (((
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)
	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)
152	152
153		-
154		-)))
155		-
156	156	== 3.3 CN470-510 (CN470) ==
157	157
158	158	Used in China, Default use CHE=1
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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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293	293
294	294	=== 3.9.2 Latest firmware, Since [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]] ===
295	295
296		-(((
297	297	There is an 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 work for the LoRaWAN server use sub-band2 , such as TTN. To solve this, the user needs to use a USB-TTL adapter to connect to the end node to manually set the sub-band which is very inconvenient.
298		-)))
299	299
300		-(((
301		-
302		-)))
303		-
304		-(((
305	305	So since **Since [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]]**, we have improved this, 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, In this case, In this case, the end node can support LoRaWAN servers with different subbands. To make sure the end node will only transmit the proper sub-band after OTAA Joined successfully, the end node will:
306		-)))
307	307
308		-* (((
309		-Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that subband
310		-)))
311		-* (((
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)
	279	+* Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that subband
	280	+* 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	313
314		-
315		-)))
316		-
317	317	= 4. Frequency Bands for different server =
318	318
319	319	* TTN Frequency Band Settings: [[https:~~/~~/www.thethingsnetwork.org/docs/lorawan/frequency-plans.html>>url:https://www.thethingsnetwork.org/docs/lorawan/frequency-plans.html]]