We have many different RAK 2287 concentrators for different regions. The label on the RAK2287 module does not have the region name on the label. The only unique information on the RAK2287 modules is the serial number.
May I ask how to identify the different concentrators?
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Check the bottom of the module. There are two spaces for resistors, one labeled 915MHz, one labeled 868MHz.
Only one is assembled and does indicate which frequency range the module is build for.
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Hello Bernd, I had the same issue in differentiating the concentrator regions. How to differentiate an assembled resistor from an unassembled one? I have attached my concentrator’s picture could you verify which version is it? Thank you.
As you can see (maybe with a magnifier), there is a resistor soldered next to the text 915MHz.
That means it is a 915MHz version.
Just changing the resistor does not mean that the concentrator works on the other frequency range, there are other differences.
But concentrators are not my domain, I can’t tell you the exact differences between a 915 and a 868 MHz concentrator.