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 ā¦
What standards? Australia regulating authority or somewhere ells?
Standard:
https://www.legislation.gov.au/Details/F2022C00281
Out of this document:
58
Digital modulation transmitters
915ā928
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 915ā928 3 mW
54. All transmitters 915ā928 3 mW Frequency hopping transmitters 915ā928 1 W A minimum of 20 hopping frequencies must be used.
58 Digital modulation transmitters 915ā928 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.
1 Like
Iām curious if anyone has done further analysis on this issue. i.e. Is LoRa modulation in Australia actually limited to 25mW.
More specifically has anyone done a technical analysis of LoRa Chirp Spread Spectrum modulation in relation to Part 58 of the ACMA regulation (The radiated peak power spectral density in any 3 kHz must not exceed 25 mW per 3 kHz).
Perhaps Andrew @Maj and the Meshed (AU) team as long term friends and deployers of TTN/TTI solutions and TTN network operators have some perspective (and guidance) on this?..