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Author

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1		-XWiki.Edwin
	1	+XWiki.Xiaoling

Content

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37	37
38	38	**End node actually value when TXP=0 and DR=0**
39	39
40		-(% border="1.5" cellspacing="4" style="background-color:#ffffcc; color:black; width:1002px" %)
41		-|(% style="width:134px" %)**Frequency band**|(% style="width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="width:362px" %)(((
	40	+(% border="1.5" cellspacing="4" style="background-color:#F2F2F2; width:1002px" %)
	41	+|(% style="width:134px;background-color:#D9E2F3" %)**Frequency band**|(% style="width:400px;background-color:#D9E2F3" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="width:362px;background-color:#D9E2F3" %)(((
42	42	**Spreading Factor(Higher SF can transmit further)**
43		-)))|(% style="width:102px" %)**Band Width**
	43	+)))|(% style="width:102px;background-color:#D9E2F3" %)**Band Width**
44	44	|(% style="width:134px" %)**EU868**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz
45	45	|(% style="width:134px" %)**US915**|(% style="width:400px" %)20 or 22 dBm (depends on max output of module)|(% style="width:362px" %)SF=10|(% style="width:102px" %)125Khz
46	46	|(% style="width:134px" %)**AS923**|(% style="width:400px" %)14dBm|(% style="width:362px" %)SF=12|(% style="width:102px" %)125Khz
47	47
48		-
49	49	== 2.2  Adaptive Data Rate (ADR) and set max distance ==
50	50
51	51
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88	88	* (% style="color:#037691" %)**AT+DR=  0**     (%%)~/~/  Use the smallest DR,the longest distance modulation
89	89	* (% style="color:#037691" %)**AT+TXP=0**    (%%) ~/~/  Use max power   For EU868, max power can be is AT+TXP=50
90	90
91		-
92	92	= 3.  Analyze at the hardware side =
93	93
94	94	== 3.1  Check if the antenna path is good ~-~- For LSn50v2 series end node ==
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123	123	* High ISM band usage by other technologies.
124	124	* Radio communication are usually killed with bad topographic conditions. It is usually not possible to communicate through a hill, even very small.
125	125
126		-
127	127	== 4.2  Improve the Antenna ==
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129	129