From: Christian Mehlis <c@sp...> - 2011-08-14 18:00:53
I have a:
Belkin Components F5D7050 Wireless G Adapter v4000
$ dmesg | egrep "zd1211b? chip"
[30382.403185] zd1211rw 1-4.4:1.0: zd1211b chip 050d:705c v4810 high 00-1c-df AL2230_RF pa0 g--NS
if I turn the device in monitor mode there is no signal strength value in the radiotap header.
i have tested this with wireshark and libpcap.
$ uname -a
Linux infrared 2.6.39-02063903-generic #201107091121 SMP Sat Jul 9 11:25:36 UTC 2011 x86_64 GNU/Linux
$ iw dev wlan2 station dump
Station 00:XX:XX:XX:XX:XX (on wlan2)
inactive time: 21350 ms
rx bytes: 7703
rx packets: 268
tx bytes: 7420
tx packets: 106
signal: 39 dBm
tx bitrate: 1.0 MBit/s
so the signal should be in [-127 to 0] ?!?
what is iw doing if there is no rssi value given? network manager shows some tiny signal.....
on my other device (ralink based) everything is fine.