Tx-Power=-43 dBm

Tom Sharples tsharples at qorvus.net
Thu Sep 8 14:00:05 EDT 2005


Anybody here have an idea what's causing this problem with prism3 radios under hostAP 0.3.9 and 2.4.20 kernel:

iwconfig  wlan0 txpower auto

results in

wlan0     IEEE 802.11b  ESSID:"****************"  Nickname:"***********"
          Mode:Master  Frequency:2.412GHz  Access Point: 00:04:E2:81:DE:D0
          Bit Rate:11Mb/s   Tx-Power=-43 dBm   Sensitivity=1/3
          Retry min limit:8   RTS thr=250 B   Fragment thr:off
          Encryption key:A00C-00E0-00   Encryption mode:restricted
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:108  Rx invalid frag:0
          Tx excessive retries:119  Invalid misc:14641   Missed beacon:0

Note the reported txpower -43   (and no measurable TX output from the board)

This using an SMC2532w-b / Xcomax XI-330HP radio.  Problem isn't there with earlier Prism 2.5 radios, you typically get an output of -10 to +10 under average conditions.

Thanks...

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