#508: Setting TXpower Issues
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Reporter: [EMAIL PROTECTED] | Owner: dyqith
Type: defect | Status: assigned
Priority: major | Milestone: version 0.9.x - progressive
release candidate phase
Component: madwifi: driver | Version: trunk
Resolution: | Keywords:
Patch_attached: 1 |
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Comment (by [EMAIL PROTECTED]):
== Txpower problem with madwifi ==
Hardware : Routerboard 532, minipci wireless card Wistron CM9 (same
problem when testing with CM9-GP)
Software : Openwrt, Madwifi 0.9.2
{{{
<4>ath_hal: module license 'Proprietary' taints kernel.
<6>ath_hal: 0.9.17.2 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413,
RF5413, REGOPS_FUNC)
<6>ath_rate_sample: 1.2 (0.9.2)
<6>wlan: mac acl policy registered
<6>ath_pci: 0.9.4.5 (0.9.2)
<4>PCI: Enabling device 0000:00:05.0 (0000 -> 0002)
<6>ath_pci: switching rfkill capability off
<4>wifi0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
<4>wifi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
<4>wifi0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps
24Mbps 36Mbps 48Mbps 54Mbps
<4>wifi0: turboA rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps
54Mbps
<4>wifi0: turboG rates: 6Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
<4>wifi0: H/W encryption support: WEP AES AES_CCM TKIP
<4>wifi0: mac 5.9 phy 4.3 radio 3.6
<4>wifi0: Use hw queue 1 for WME_AC_BE traffic
<4>wifi0: Use hw queue 0 for WME_AC_BK traffic
<4>wifi0: Use hw queue 2 for WME_AC_VI traffic
<4>wifi0: Use hw queue 3 for WME_AC_VO traffic
<4>wifi0: Use hw queue 8 for CAB traffic
<4>wifi0: Use hw queue 9 for beacons
<6>wifi0: Atheros 5212: mem=0x50000000, irq=143
}}}
This AP replace an older AP and the rssi seen by
the stations is 10dB less than with the older ap.
I think the 'iwconfig ath0 txpower xx' does not set
the txpower at xx dB, but 10 db less (or more).
Another point : the CM9 card can provide 18dB max,
but increasing from 18 to 20 increase the rssi
on the stations.
Looks like a value of antenna gain in the
eeprom of the CM9, that is substracted from the
value we fed.
--
Ticket URL: <http://madwifi.org/ticket/508>
MadWifi <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity-------------------------------------------------------------------------
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