ndom
DD-WRT Novice
Joined: 04 Sep 2022
Posts: 13
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 Posted: Mon Oct 03, 2022 6:44 Post subject: |
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| ho1Aetoo wrote: |
This is probably because you have not fully understood the syntax.
I mean how can the command display anything right if you don't specify the interface?
Regulatory 2,4Ghz and 5Ghz have different allowed transmit power depending on the channel.
Also, the command is used to set the transmit power and not to display the limits.
Apart from that the 1.5W is nonsense anyway as if the router would reach this power at all...
The router has a transmit power with 80Mhz and beamforming of maximum 26dB...
Completely regardless of what the driver says
(the radios have hardware limits and are tested - and the transmit power decreases with increasing channel width and higher modulation)
http://www.it.uc3m.es/~rcuevas/lis/wl_manual.txt
If you want something decent and transparent then you have to buy atheros or mediatek router and not closed source broadcom nonsense. |
Thanks @ho1Aetoo. Indeed, the correct command is:
| Code: | # mode: off, TPC mitigation factor: 0, TX power: auto
~# wl -i eth2 txpwr
31.75 dBm = 1496 mw.
# mode: off, TPC mitigation factor: 0, TX power: manual 10mw
~# wl -i eth2 txpwr
10.0 dBm = 10 mw.
# mode: off, TPC mitigation factor: 0, TX power: manual 999mw
~# wl -i eth2 txpwr
30.0 dBm = 1000 mw.
# mode: 802.11h strict, TPC mitigation factor: 3, TX power: auto
~# wl -i eth2 txpwr
31.75 dBm = 1496 mw.
# mode: 802.11h loose, TPC mitigation factor: 3, TX power: auto
~# wl -i eth2 txpwr
31.75 dBm = 1496 mw.
# mode: off, TPC mitigation factor: 3, TX power: auto
~# wl -i eth2 txpwr
31.75 dBm = 1496 mw.
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Tested on Archer c9v4 with the following settings:
- channel 100.
- Width 80Mhz,
- regulatory domain Europe.
- Firmware: DD-WRT v3.0-r50176 std (09/15/22)
I was expecting to see the TX power being limited <= 1000mw when turning both the 802.11h mode and mitigation factor on.
Are there any other ways you think I can test it with?
| Per Yngve Berg wrote: |
DFS/TPC is mandatory on outdoor equipment.
Some channels is also only legal for indoor use.
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Could you kindly share with us where you found this information? |
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