AU915 - Maximum transmission power 25 mWatt

Hello,

our test house told us that in Australia the maximum transmission power is 25 mWatt for LoRa. The value 1 watt is also found in the standards.

What applies now and under what circumstances?

Thanks
Holger

I am intrigued by this.

Maybe in Australia the regulations notionally allow you to use a TTN Node or Gateway at up to 1 Watt.

But are their Gateways and nodes that are capable of 1 Watt ?

No, of course our LoRa devices cannot handle 1 watt. But just 100 mWatt. And a limit of 25 mWatt hurts.
Hence the question:
Does the limitation to 25 mWatt always apply?

What is the range difference between 100mW and 25mW, or between 1W and 25mW?

Maybe the the Australian regulator knows …

What standards? Australia regulating authority or somewhere ells?

Standard:
https://www.legislation.gov.au/Details/F2022C00281

Out of this document:
58

Digital modulation transmitters

915–928

1 W

The radiated peak power spectral density in any 3 kHz must not exceed 25 mW per 3 kHz.

Your best bet is to speak to the regulating authority.

You can also read from the same document.

20. All transmitters 915–928 3 mW

54. All transmitters 915–928 3 mW Frequency hopping transmitters 915–928 1 W A minimum of 20 hopping frequencies must be used.

58 Digital modulation transmitters 915–928 1 W The radiated peak power spectral density in any 3 kHz must not exceed 25 mW per 3 kHz.

All jargon for lawyers to interpret.

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