RUI3 TXPower clarification

WisBlock
1

Hi,
In the RUI3 docs the TXPower for US915 is described as:

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  1. Is MaxEIRP = 22dBm? or is it 30dBm?
  2. For TXPower 3 to 9 the configuration would be as follows? or there’s no support for those TXPower values?

TXPower—Configuration
3--------------MaxEIRP - 6dB
4--------------MaxEIRP - 8dB
5--------------MaxEIRP -10dB
6--------------MaxEIRP - 12dB
7--------------MaxEIRP - 14dB
8--------------MaxEIRP - 16dB
9--------------MaxEIRP - 18dB

  1. If MaxEIRP = 30dBm and the above table is correct, then the Conducted Power for TXPower = 0-4 is 22dBm?

Thanks.

2

Hi @nicolasech ,

You are correct. For LoRaWAN mode, the TXPower will be clipped to 22dB as stated on LoRaWAN Specification.

1 Like
3

Hi @carlrowan,
Thanks for your reply, based on it I’ll assume:

  1. Is MaxEIRP = 22dBm? or is it 30dBm?
    MaxEIRP is 30dBm, but the module will clip the output power to 22dBm.

  2. For TXPower 3 to 9 the configuration would be as follows? or there’s no support for those TXPower values?

TXPower—Configuration
3--------------MaxEIRP - 6dB
4--------------MaxEIRP - 8dB
5--------------MaxEIRP -10dB
6--------------MaxEIRP - 12dB
7--------------MaxEIRP - 14dB
8--------------MaxEIRP - 16dB
9--------------MaxEIRP - 18dB

The above table is correct

  1. If MaxEIRP = 30dBm and the above table is correct, then the Conducted Power for TXPower = 0-4 is 22dBm?
    The above is correct
4

Yes, that’s correct @nicolasech :+1:

5

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