On 05/22/2012 02:39 PM, Steven Stern wrote:
On 05/20/2012 05:55 PM, JD wrote:
$ iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"Private"
Mode:Managed Frequency:2.452 GHz Access Point:
00:AA:BB:CC:DD:EE
Bit Rate=18 Mb/s Tx-Power=27 dBm
Retry long limit:7 RTS thr=2346 B Fragment thr=2346 B
Power Management:off
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:32 Missed beacon:0
I have an Atheros (D-link) card that says it's at 54M, but I rarely get
24M when going to other computers on the lan... usually about 11M. Your
link quality seems better than mine.
$ iwconfig wlan0
wlan0 IEEE 802.11bg ESSID:"Bandit"
Mode:Managed Frequency:2.422 GHz Access Point:
00:18:E7:F7:50:2A
Bit Rate=54 Mb/s Tx-Power=27 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=45/70 Signal level=-65 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1 Invalid misc:1598 Missed beacon:0
If you notice, we have different signal levels (quality).
When I pasted this observation, I had
Link Quality=58/70 Signal level=-52 dBm
whereas you have 45/70 - yet you are still at 54 Mb/s
Currently, I switched to an external (usb) high power
(1000 mw) wifi adapter AWUS036H with a 20dBi antenna,
and look at what iwconfig wlan1 reports:
$ iwconfig wlan1
wlan1 IEEE 802.11bg ESSID:"Private"
Mode:Managed Frequency:2.452 GHz Access Point:
00:AA:BB:CC:DD:EE
Bit Rate=18 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr=2346 B Fragment thr=2346 B
Power Management:off
Link Quality=70/70 Signal level=-37 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:1250 Missed beacon:0
I have 100% signal quality ( which is gauged by the strength of
received signal??? don't know!), and yet the rate is fixed at 18 Mb/s.
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