Incorrect Atheros txpower output

[Mohammad Ikram]

Hi !

I am using FreeBSD 7.0 and recently installed a Engines EPI-3601S card. The
card has an Atheros chip with a 27dBm output power rating. I am using it as
hostap. FreeBSD detects it fine, but the trouble is FreeBSD does not takes
the power level up. The max i was able to set is was 16dBm. (ifconfig ath0
txpower xx). I tried it on linux with madwifi but same results, so i started
having a few doubts with this card, a friend of mine suggested that i should
try the router OS (www.mikrotik.com) i did, and it worked perfectly.

can any one tell me why can't i change the power level ? (i did changed
country codes, to no avail)  i read some where it is the problem with the
driver ? so is there any patch ?

Ikram
Pakistan.