Opened 3 years ago

Last modified 2 years ago

#18834 new defect

WZR-600DHP/WZR-HP-AG300H TX power capped at 18dBm/15dBm

Reported by: anonymous Owned by: developers
Priority: normal Milestone:
Component: packages Version: Trunk
Keywords: Cc:


On CC trunk, on my WZR-600DHP, I cannot achieve more than 18dBm TX power on the 2.4 GHz band, and 15dBm on the 5GHz band. I've tried everything I can think of -- jow's reghack, reboots, changing regulatory domain to World/Bolivia/etc., changing values via LuCI, iw, /etc/config/wireless -- and nothing works.

From searching here and the forums, it seems this is a perpetual (and fairly popular) issue that _still_ has not been resolved.

Attachments (0)

Change History (4)

comment:1 Changed 3 years ago by anonymous

How do you get 18dbm @ 2.4 GHz? All I can get is 15 dbm. Which channel, country and HT-mode do you use?

comment:2 Changed 3 years ago by anonymous

On r44091, for 2.4 GHz, I set 20 dBm in the LuCI drop-down menu. LuCI and iwinfo both indicate only 18 dBm, though. Country is US, channel is 11, and HT-mode is 20 MHz. Changing all three of these (to HT40, Bolivia, and channels 6 and 13) had no effect.

*HOWEVER*, I did encounter some very weird behavior with my 5 GHz band. I set desired Tx power to a low setting (like 13 dBm), rebooted, and then set Tx power back up to 20 dBm. This time, I got a limit of 17 dBm instead of my original 15 dBm in LuCI and iwconfig. I've been changing various settings back and forth, and 5 GHz now always tops off at 17 dBm.

Look, devs. In light of the above, I'll bet that this is at least partially software-related. The FCC tests for these routers specify 22 dBm EIRP, and frankly, I and many others are tired of them not working properly.

So, would it be too much to ask to take a look into the issue? Or, better yet, provide us with some specific pointers on investigating it? I'm a decent C programmer, and have a little experience with drivers and HW too.

Thanks in advance.

comment:3 Changed 3 years ago by finas

same with me. stuck at 15dbm whatever I try.

So desperate with this that I am thinking about buying another router, namelly the TPLINK Archer C5.

comment:4 Changed 2 years ago by anonymous


  • 2412 MHz [1] (16.0 dBm)
  • 2417 MHz [2] (16.0 dBm)
  • 2422 MHz [3] (16.0 dBm)
  • 2427 MHz [4] (16.0 dBm)
  • 2432 MHz [5] (16.0 dBm)
  • 2437 MHz [6] (16.0 dBm)
  • 2442 MHz [7] (16.0 dBm)
  • 2447 MHz [8] (16.0 dBm)
  • 2452 MHz [9] (16.0 dBm)
  • 2457 MHz [10] (16.0 dBm)
  • 2462 MHz [11] (16.0 dBm)
  • 2467 MHz [12] (16.0 dBm)
  • 2472 MHz [13] (16.0 dBm)
  • 2484 MHz [14] (disabled)

Well this sucks...

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