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There is no such restriction in the code. What frequency band are you using?

Thank you very much for your question, this is indeed a problem with our documentation and firmware, we will improve this later.

Yes，the RFM95 is a example.

What is your frequency band?

Can you see what number is behind the ERROR returned?

With regard to the last two points you mentioned, can you accept a module with only a single LoRa chip?

@phil31 Hello, regarding what you said, we think that there is no need for such equipment for the time being. If you want to use the SPI interface to control LoRa, you can use the official chip sx1276 or sx1278 directly.
We introduced the LoRa module of the UART interface because the UART interface is easier for customers to use than the SPI interface. If we then use the MCU to encapsulate the LoRa chip into an SPI interface, that would lose its significance.

Thank you very much for your suggestion. Your suggestion is very valuable.

We are making changes to the hardware design of the RAK811 Tracker to reduce the power consumption of the equipment. Can you summarize some of your opinions?

@ikilby said in RAK811 trackernode:

If your GPS module is not set to a position, there will be no GPS data. Make sure your GPS module is in an environment that can be positioned.

@phil31 Because the way we upgrade firmware is also the official way to upgrade, so at present only one of the possible solutions mentioned above.