WiFi Tx power question--more
Heinz Diehl
htd+ml at fritha.org
Sat Sep 20 07:41:31 UTC 2014
On 20.09.2014, Doug wrote:
> A better location will probably be somewhere up above all the clutter around your work-station.
> Try it up about head-height or higher, on a little bracket or shelf on the wall.
This is what I did some time ago and what worked for me.
Btw: I'm using an external USB adapter. It's a TP-Link TL-WDN4200:
Bus 002 Device 008: ID 148f:3573 Ralink Technology, Corp. RT3573 Wireless Adapter
[root at kiera ~]# uname -a
Linux kiera.fritha.org 3.16.3-rc1 #2 SMP PREEMPT Tue Sep 16 11:21:20 CEST 2014 x86_64 x86_64 x86_64 GNU/Linux
Dmesg says:
[ 869.670426] ieee80211 phy2: rt2x00_set_rt: Info - RT chipset 3593, rev 0402 detected
[ 869.704359] ieee80211 phy2: rt2x00_set_rf: Info - RF chipset 000d detected
[ 869.705165] ieee80211 phy2: Selected rate control algorithm 'minstrel_ht'
[ 869.730305] ieee80211 phy2: rt2x00lib_request_firmware: Info -Loading firmware file 'rt2870.bin'
[ 869.730351] ieee80211 phy2: rt2x00lib_request_firmware: Info -Firmware detected - version: 0.29
Iwconfig says:
wlan1 IEEE 802.11abgn ESSID:"Moonshine"
Mode:Managed Frequency:5.66 GHz Access Point: 00:46:30:22:C8:76
Bit Rate=173.3 Mb/s Tx-Power=23 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=49/70 Signal level=-61 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Setting the txpower using iwconfig works fine, but not above 23 dBm,
which also is the standard for this adapter on 5 GHz.
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