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Changes for page Switch_LoRaWAN_Frequency

Last modified by Xiaoling on 2023/03/27 13:41
From version 5.1
edited by Edwin Chen
on 2023/03/25 09:34
Change comment: There is no comment for this version
To version 4.1
edited by Edwin Chen
on 2023/03/25 09:33
Change comment: Uploaded new attachment "image-20230325093133-1.png", version {1}

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6 6  
7 7  In our product, the 868Mhz and 915Mhz modules use the SX1276/SX1262 HF Radio path, the difference of these two modules are 3 inductors that can let the module work best in 868MHz or 915Mhz.
8 8  
9 -If user updates the firmware to support different regions. the difference will be the Radio performance which is not significant between 868Mhz and 915Mhz. Around (0.5~~1 dB)
9 +If user updates the firmware to support different regions. the difference will be the Radio performance which is not significant between 868Mhz and 915Mhz.
10 10  
11 11  
12 12  
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13 13  == 1.2  For LoRaWAN Gateway: NO ==
14 14  
15 15  
16 -In LoRaWAN Gateway design, a bandpass filter is used to reduce the noise of unwant band to the minimize level.
16 +In LoRaWAN Gateway design, a bandpass filter is used,
17 17  
18 18  * For 868Mhz hardware version, the range for this filter is  : 863Mhz ~~ 870Mhz. A signal on other frequencies will be considered as noise and high decreased.
19 19  * For 915Mhz hardware version,  the range for this filter is  : 902Mhz ~~ 928Mhz. A signal on other frequencies will be considered as noise and high decreased.
... ... @@ -20,12 +20,8 @@
20 20  
21 21  So use a 868Mhz gateway hardware for 915 (or adverse) will see very poor radio performance (distance maybe only several meters).
22 22  
23 -Below is the filter for 868 as example, There will be more than -60dB decrease in 915Mhz frequency.
24 24  
25 -[[image:image-20230325093133-1.png||height="461" width="730"]]
26 26  
27 -
28 -
29 29  = 2.  I have a Dragino LoRa product with 868Mhz, Can i use it in 433Mhz? =
30 30  
31 31