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1	1	(% class="wikigeneratedid" id="HEndDeviceFrequencyBand" %)
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	2	+ Contents：
3	3
4	4	{{toc/}}
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126	126	** 927.5 - SF7BW500 to SF12BW500
127	127	** 923.3 - SF12BW500(RX2 downlink only)
128	128
	129	+(((
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.
	131	+)))
130	130
	133	+
	134	+(((
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.
	136	+)))
132	132
	138	+
	139	+(((
133	133	After Join success, the end node will switch to the correct sub band by:
	141	+)))
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)
	143	+* (((
	144	+Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that sub-band
	145	+)))
	146	+* (((
	147	+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)
	148	+)))
137	137
138	138	== 3.3 CN470-510 (CN470) ==
139	139
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272	272
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
	287	+(((
275	275	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.
	289	+)))
276	276
	291	+(((
	292	+
	293	+)))
	294	+
	295	+(((
277	277	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:
	297	+)))
278	278
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)
	299	+* (((
	300	+Check what sub-band the LoRaWAN server ask from the OTAA Join Accept message and switch to that subband
	301	+)))
	302	+* (((
	303	+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)
	304	+)))
281	281
282	282	= 4. Frequency Bands for different server =
283	283