The setting of preamble and header

LPWAN Modules / EVBs RAK811
1

Can I check the length of the preamble or header (in bits or symbols)?

And whether these have default values and can be modified?

2

Hi @haowong ,

The length of preamble and header of RAK811 is not modifiable if in LoRaWAN mode. The default values follows the LoRaWAN Regional Parameters document of LoRa Alliance.

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But if the RAK811 is working in LoRa P2P mode, then you can change the the preamble length. Check this link - RAKwireless Documentation Center

3

Thanks.

By the way, the products of Rakwireless all follow the default length in LoRaWAN model? I may buy other products besides 811, so I asked in advance.

4

Yes. Our products support the default length.

Btw, if you are working on a new product, I highly recommend you use RAK4270 instead of the old RAK811. You’ll have better power consumption and it uses the latest Semtech LoRa chip.