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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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82	82	** Uplink channels 1-8 (RX1)
83	83	** 921.4 - SF10BW125 (RX2)
84	84
85		-
86	86	=== 3.1.4 AS923-3 ===
87	87
88	88	* Default Uplink channel:
...	...	@@ -132,29 +132,15 @@
132	132	** 927.5 - SF7BW500 to SF12BW500
133	133	** 923.3 - SF12BW500(RX2 downlink only)
134	134
135		-(((
136	136	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		-)))
138	138
139		-
140		-(((
141	141	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		-)))
143	143
144		-
145		-(((
146	146	After Join success, the end node will switch to the correct sub band by:
147		-)))
148	148
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)
	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)
154	154
155		-
156		-)))
157		-
158	158	== 3.3 CN470-510 (CN470) ==
159	159
160	160	Used in China, Default use CHE=1
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180	180	** 508.1 - SF7BW125 to SF12BW125
181	181	** 505.3 - SF12BW125 (RX2 downlink only)
182	182
183		-
184	184	== 3.4 EU863-870 (EU868) ==
185	185
186	186	* Uplink:
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212	212	** Uplink channels 1-3 (RX1)
213	213	** 866.550 - SF10BW125 (RX2)
214	214
215		-
216	216	== 3.6 KZ865 ==
217	217
218	218	* Uplink ~-~- 125Khz , DR0 - DR5
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226	226	** The RX1 receive window uses the same channel as the preceding uplink.
227	227	** The RX2 receive window uses a fixed frequency and data rate. The default parameters are 866.7MHz / DR0 (SF12, 125 kHz)​
228	228
229		-
230	230	== 3.7 KR920-923 (KR920) ==
231	231
232	232	* Default channel:
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247	247	** Uplink channels 1-7(RX1)
248	248	** 921.9 - SF12BW125 (RX2 downlink only; SF12BW125 might be changed to SF9BW125)
249	249
250		-
251	251	== 3.8 MA869 ==
252	252
253		- Country: Morroco
254		-
255	255	* Uplink:
256	256	** 869.1 - SF7BW125 to SF12BW125
257	257	** 869.3 - SF7BW125 to SF12BW125
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267	267	** Uplink channels 1-9 (RX1)
268	268	** 869.525 - SF12BW125 (RX2 downlink only)
269	269
270		-
271	271	== 3.9 US902-928 (US915) ==
272	272
273	273	Used in USA, Canada and South America.
274	274
275		-
276	276	=== 3.9.1 Before [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]]. ===
277	277
278	278	Default use CHE=2, Subband 2
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298	298	** 927.5 - SF7BW500 to SF12BW500
299	299	** 923.3 - SF12BW500(RX2 downlink only)
300	300
301		-
302	302	=== 3.9.2 Latest firmware, Since [[Dragino DLS-005 LoRaWAN Stack>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/DR-LWS/changelog]] ===
303	303
304	304	(((
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318	318	)))
319	319	* (((
320	320	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		-
323	323	)))
324	324
325	325	= 4. Frequency Bands for different server =