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Hi everyone,
I recently bought a USB WiFi adapter (AX3000 with the MT7921U chipset) based on a recommendation I found in a GitHub post. My computer detects it and I can use it without any problems for general internet use.
However, the Tx-Power is limited to 3 dBm, and I was hoping to use this adapter with aircrack-ng, but I'm starting to think it might not be suitable for that purpose due to the low power output.
That's why I'm posting here – to ask if this low Tx-Power is normal for this chipset, or if there's any way to increase it. Or maybe I just need to get a different adapter for my intended use?
I've already changed the regulatory domain. Here's the output of iw reg get:
global
country BZ: DFS-JP
(2402 - 2482 @ 40), (N/A, 30), (N/A)
(5735 - 5835 @ 80), (N/A, 30), (N/A)
And here’s the output from iw config:
IEEE 802.11 ESSID:"????"
Mode:Managed Frequency:5.765 GHz Access Point: 86:AA:9C:0B:27:8B
Bit Rate=780 Mb/s Tx-Power=3 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=70/70 Signal level=-31 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
And here’s the output of ethtool -i:
driver: mt7921u
version: 6.14.2-arch1-1
firmware-version: ____010000-20241106151045
expansion-rom-version:
bus-info: 4-2:1.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
I hope I’m not bothering anyone with this question or the intention behind it. Please be kind — I’m new here.
Thanks in advance!
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I have the exact same question. My MT7921u wifi adapter is showing 3dBm tx-power, but I kind of think maybe this is incorrect because the adapter still seems to pick up wifi networks very well. I would love to know the answer to this though.
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