Incorrect Atheros txpower output

[M. Warner Losh]

In message: <6fe7c62a0807291226x15ef59bcn334c97562f3399b8 at mail.gmail.com>
            "Mohammad Ikram" <ikram at wideband.com.pk> writes:
: 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 ?

Did you measure the output power directly?  Many cards have a final
stage amplifier that kicks things up a few dB...  Maybe router OS
knows about this card's quirks and copes...

Warner