Date: Wed, 14 Feb 2007 15:29:23 +0200 From: Johann Hugo <jhugo@meraka.csir.co.za> To: mobile@freebsd.org Subject: Atheros - txpower - Compex WLM54AG + WLM54AG-23 Message-ID: <200702141529.23439.jhugo@meraka.csir.co.za>
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I'm busy testing two wifi cards from Compex under FreeBSD 6.2-STABLE. The WLM54AG card has a max txpower of 20dBm and the WLM54AG-23 has a max txpower of 23dBm. http://www.compex.com.sg/home/Datasheet/New_WLM_DSv1.9.pdf The problem is that both cards produces the same RSSI value on my remote station a couple of km's away from my test setup. If I do the same test with the same cards under Ubuntu 6.06 then the WLM54AG-23 produces a bigger RSSI value on my remote station than the WLM54AG card. Under FreeBSD, with a country code of 710 the max txpower can only go up-to 32 (16dbm) on both cards and vith a country code of 0 they can go upto 36 (18dbm). Under Ubunti I can set the max txpower of the WLM54AG card to 20dBm and the WLM54AG-23 card to 23dBm. I'm not to sure if this is the right place to post my problem, or whether I should rather try the MadWifi list or the manufacturer of the cards itself, but it feels like it's related to FreeBSD. Johann Hugo Here is some more detail of my setup -------------------------------------------------------------------------------------------------------------- Local test side --- 2km wifi --- Remote side (RSSI) Local station: wifi cards. Compex WLM54AG + WLM54AG-23 Soekris net4526 running FreeBSD 6.2-STABLE #15: Mon Jan 29 dmesg ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413) ath0: <Atheros 5212> mem 0xa0000000-0xa000ffff irq 10 at device 17.0 on pci0 ath0: [GIANT-LOCKED] ath0: Ethernet address: 00:80:48:41:49:3d ath0: mac 10.4 phy 6.1 radio 6.3 Remote station: wifi card = Aries5354 Wrap 2C running 6.2-PRERELEASE #9: Tue Dec 5 dmesg ath1: <Atheros 5212> mem 0x80080000-0x8008ffff irq 9 at device 17.0 on pci0 ath1: [GIANT-LOCKED] ath1: Ethernet address: 00:02:6f:34:21:a0 ath1: mac 5.6 phy 4.1 5ghz radio 1.7 2ghz radio 2.3 RSSI stats on remote side: ------------------------- WLM54AG card FeeBSD rodricks:~ > ifconfig ath1 list sta ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG 00:80:48:41:49:3d 0 5 2M 15 0 17 60368 IS A Ubuntu rodricks:~ > ifconfig ath1 list sta ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG 00:80:48:41:49:3d 0 5 2M 13 0 108 61328 IS A ---------------------- WLM54AG-23 card FreeBSD rodricks:~ > ifconfig ath1 list sta ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG 00:80:48:7e:60:17 0 5 1M 13 0 38066 47824 IS A countrycode = 0 rodricks:~ > ifconfig ath1 list sta ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG 00:80:48:7e:60:17 0 5 5M 15 0 43 51008 IS A Ubuntu rodricks:~ > ifconfig ath1 list sta ADDR AID CHAN RATE RSSI IDLE TXSEQ RXSEQ CAPS FLAG 00:80:48:7e:60:17 0 5 5M 20 0 62 4672 IS A WME
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