OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
  • Task Type Bug Report
  • Category Base system
  • Assigned To No-one
  • Operating System All
  • Severity Low
  • Priority Very Low
  • Reported Version Trunk
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Dmitry Tunin - 20.08.2018

FS#1799 - ath79: ath9k AR9223 tx power can't be set to 19dBm

On ath79 build for DIR-825B1 tx-power on 2.4 GHz doesn’t set to maximum 19 dBm.
It is allowed in degdb and is listed in iw list.
But setting it to 19dBm results in 18dBm.

blackbox commented on 06.12.2019 14:27

I seem to have the same issue on a BT Home Hub 5 Type A.

The transmit power for radio 1 (AR9287 - 2.4GHz) defaults to 18dBm and although it offers 19dBm and 20dBm they won't apply. It'll only use 20dBm if I change the country code to the US, despite 100mW being the maximum across Europe.

I'm currently using OpenWrt 19.07.0-rc2.

Project Manager
Adrian Schmutzler commented on 08.07.2020 13:10

The maximum configurable txpower is based on the maximum allowed value _minus_ the antenna gain. I assume the antenna gain for your device is 2 dB, so you can't set anything above 18dB for the txpower?

Dmitry Tunin commented on 08.07.2020 13:16

That's correct. I don't have the device right now, but I will have it next week.


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