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Increase tx power in WPEA-121N Wifi Card

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I trying to increase tx-power on WPEA-121N Wifi Card (Atheros AR9382 Chip) but i just cant set it over 18 dBm. Inside datasheet specification i can see that power consumption for continue TX is 600mA so the output power should be around 1.98W (3,3V*0.6A) wchich is around 33 dBm. I change regulatory.bin file to allow setting tx power over 30 dBm on every frequency. But neither commands:

iw dev wlp1s0 set txpower fixed 2500

or

iwconfig wlp1s0 txpower 25dBm

cant change txpower over 18 dBm.

I have modified linux modules using patches from: ath9k: Differentiate between max combined and per chain power and ath9k-3.12.8-1-maxpower.patch but noone of this is working.

Inside /drivers/net/wireless/ath/ath9k/hw.h there is defined variable:

#define MAX_RATE_POWER              63

and 63 mW indicate that this is max power i can set (18dBm) but changing this (to 254) also do nothing.

ath9k running as a modules so i guess i dont need to recompile whole kernel but just to remake modules and copy&replace them inside /lib//modules/kernelNumber/kernel/drivers/.....

Is there any way to override max power to incresae it over 30 dBm?

Any suggestion?


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