EU 868 TX Levels?

1

Are the EIRP TX levels listed here correct? https://www.thethingsnetwork.org/docs/lorawan/regional-parameters/eu868/

They flow highest to lowest vs. lowest to highest in the LoRa Alliance RP’s and other documentation.
Thanks in advance

2

I can see where the confusion comes from. Taking RP002-1.0.4 as reference for EU868, the table looks like this:

image

Note that the EIRP is calculated as Max EIRP - 2*TXPower dB. With Max EIRP = 16, this means that for e.g. TXPower 3, the Max EIRP = 16 - 2*3 = 10. This matches with the table you linked.

The ‘gotcha’ is that the RP table takes the Max EIRP and subtracts a certain value, which makes it looks like it is inverted in contrast to the table you linked. But the actual values are the same if you perform the calculations :slight_smile:

3

Thanks Steven for the additional context and clarification. I interpreted the “dash” as a hyphen, not as a subtraction operator…all makes sense now! :slightly_smiling_face: Kelly

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