I noticed that lowering the value of TX Power field in IPFire/WLanAP does nothing, as the value applied remains always the default. I searched bugzilla to see if this is a known issue and I found this bug report from @ms that seems to indicate this feature is not available in IPFire 2.X. but it is planned for 3.X
Since I do not require a higher transmission power, I did set it manually:
iwconfig blue0 txpower 12
as far as I can tell, it seems to work:
iwconfig blue0 blue0 IEEE 802.11 Mode:Master Tx-Power=12 dBm Retry short limit:7 RTS thr:off Fragment thr:off Power Management:on
Edit: to make it survive a reboot I inserted the command in
/etc/sysconfig/rc.local . Should be this properly documented in the wiki?