Changes for page How to improve LoRaWAN distance
Last modified by Xiaoling on 2024/08/16 11:25
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... ... @@ -38,9 +38,9 @@ 38 38 **End node actually value when TXP=0 and DR=0** 39 39 40 40 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:1002px" %) 41 -|(% style="background-color:#4 f81bd;f81bd;f81bd;41 +|(% style="background-color:#4F81BD;color:white; width:134px" %)**Frequency band**|(% style="background-color:#4F81BD;color:white; width:400px" %)**Output Power in LoRa Module (consider 2dB antenna)**|(% style="background-color:#4F81BD;color:white; width:362px" %)((( 42 42 **Spreading Factor(Higher SF can transmit further)** 43 -)))|(% style="background-color:#4 f81bd;43 +)))|(% style="background-color:#4F81BD;color:white; width:102px" %)**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 ... ... @@ -85,11 +85,8 @@ 85 85 * (% style="color:#037691" %)**AT+DR=0** (%%)~/~/ Use the smallest DR,the longest distance modulation (% style="color:#037691" %)**(downlinkpayload: 220000FF)** 86 86 * (% style="color:#037691" %)**AT+TXP=0** (%%)~/~/ Use max power For EU868, max power can be is AT+TXP=50 (% style="color:#037691" %)** (downlinkpayload: 22000000)** 87 87 88 - 89 - 90 90 == 2.5 Debug in Software == 91 91 92 - 93 93 Dragino can help client to debug the software for the distance issue. In the case , please send us below info: 94 94 95 95 * Detail packets include for Join Request, Join Accept, Uplink & Downlink, These packets should include: ... ... @@ -96,7 +96,6 @@ 96 96 ** RSSI, DataRate, FCNT, Frequency. 97 97 ** MIC command detail & Payload detail. 98 98 99 - 100 100 = 3. Analyze at the hardware side = 101 101 102 102 == 3.1 Check if the antenna path is good ~-~- For LSN50v2 series end node == ... ... @@ -106,6 +106,7 @@ 106 106 107 107 b) check if the connector match. 108 108 105 + 109 109 [[image:image-20221016081725-1.png||height="426" width="706"]] 110 110 111 111 ... ... @@ -130,8 +130,6 @@ 130 130 * High ISM band usage by other technologies. 131 131 * Radio communication are usually killed with bad topographic conditions. It is usually not possible to communicate through a hill, even very small. 132 132 133 - 134 - 135 135 == 4.2 Improve the Antenna == 136 136 137 137 ... ... @@ -148,6 +148,7 @@ 148 148 149 149 Below is the output log in gateway side ( SSH Access to Gateway and Check Station log) 150 150 146 + 151 151 [[image:image-20221006185826-4.png]] 152 152 153 153