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171	171	[[image:image-20220524164514-14.png]]
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	173	+
173	173	and recode the station log in the system/Recode log page.
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175	175	[[image:image-20220524164541-15.png]]
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	178	+
177	177	= 4. Downlink =
178	178
179	179	== 4.1 Chirpstack Downlink Note ==
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182	182
183	183	Convert the data to Base64
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185	185	[[image:image-20220526090748-4.png]]
186	186
187	187	Check ChripStack downlink DataRate
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	192	+
189	189	[[image:image-20220525101326-11.png]]
190	190
191	191	Make sure the RX2DR is the same in the end node
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	197	+
193	193	== 4.2 Loraserver Downlink Note ==
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195	195	User can use MQTT to send downlink payload to ChirpStack to perform downstream to LoRaWAN End
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211	211	(((
212	212	MQTT Connect to ChirpStack
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	219	+
213	213	)))
214	214
215	215	(((
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236	236	MQTT Connect to ChirpStack
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	245	+
238	238	(((
239	239	(% style="color:red" %)Note: Chirpstack use base64 to downlink, so need to convert the downlink payload from HEX to base64 [[https:~~/~~/base64.us/>>url:https://base64.us/]]
240	240	)))
...	...	@@ -243,6 +243,7 @@
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244	244	Choose to Use Hex for Encode
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	254	+
246	246	If we want send downstream hex 030101 to end node, the BASE64 payload is AwEB
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248	248	[[image:image-20220525104025-15.png]]