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RT3070 wireless adapter adjust tx power??

wallarug

I seem to be unable to adjust the tx power above 20dbm.  I have tried: 'iwconfig wlan0 txpower 22' but this does not change the txpower.

 

I have also disabled the power-management.

 

The adapter claims that it can hit 5800mW of power which aquates to about 37dBm.

 

Does anyone know how I can get the txpower up? (I can put it down, just not up)

 

root@raspberrypi:~# lsusb

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.

Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.

Bus 001 Device 004: ID 148f:3070 Ralink Technology, Corp. RT2870/RT3070 Wireless Adapter

root@raspberrypi:~# iwconfig wlan0 txpower 30

Error for wireless request "Set Tx Power" (8B26) :

    SET failed on device wlan0 ; Invalid argument.

root@raspberrypi:~#

Parents

  • Any idea what any of this means?

     

    [    2.645344] usb 1-1.3: Product: 802.11 n WLAN

    [    2.653229] usb 1-1.3: Manufacturer: Ralink

    [    3.753010] udevd[137]: starting version 175

    [    5.219718] cfg80211: Calling CRDA to update world regulatory domain

    [    6.202215] usb 1-1.3: reset high-speed USB device number 4 using dwc_otg

    [    6.483273] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'

    [    6.484945] Registered led device: rt2800usb-phy0::radio

    [    6.485093] Registered led device: rt2800usb-phy0::assoc

    [    6.485224] Registered led device: rt2800usb-phy0::quality

    [    6.485359] usbcore: registered new interface driver rt2800usb

    [    8.919891] cfg80211: World regulatory domain updated:

    [    8.927372] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)

    [    8.935303] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

    [    8.942959] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)

    [    8.950748] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)

    [    8.958288] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

    [    8.966107] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

     

    ...From startup prompt.  It is stopping /etc/network/interfaces from controlling the card.

Reply

  • Any idea what any of this means?

     

    [    2.645344] usb 1-1.3: Product: 802.11 n WLAN

    [    2.653229] usb 1-1.3: Manufacturer: Ralink

    [    3.753010] udevd[137]: starting version 175

    [    5.219718] cfg80211: Calling CRDA to update world regulatory domain

    [    6.202215] usb 1-1.3: reset high-speed USB device number 4 using dwc_otg

    [    6.483273] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'

    [    6.484945] Registered led device: rt2800usb-phy0::radio

    [    6.485093] Registered led device: rt2800usb-phy0::assoc

    [    6.485224] Registered led device: rt2800usb-phy0::quality

    [    6.485359] usbcore: registered new interface driver rt2800usb

    [    8.919891] cfg80211: World regulatory domain updated:

    [    8.927372] cfg80211:     (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)

    [    8.935303] cfg80211:     (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

    [    8.942959] cfg80211:     (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)

    [    8.950748] cfg80211:     (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)

    [    8.958288] cfg80211:     (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

    [    8.966107] cfg80211:     (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

     

    ...From startup prompt.  It is stopping /etc/network/interfaces from controlling the card.

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