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[Z3r0]

I have 3 wireless network cards: Intel 4965ABBN, Intel 3945ABG and TP-Link TL-WN951N.

All have some form of problem with the DIR-825.

Intel 4965ABGN - 5ghz: Great. 2.4ghz: No data transfer
Intel 3945ABG - 5ghz: Great. 2.4Ghz: Bad only transfers at 64KB/s
TP-Link TL-WN951N - 5ghz: Not Applicable. 2.4Ghz: DL 600KB/s, UL 2MB/s.

The Intel cards are running driver version 12.2.
The TP-Link card which appears to be an AR5008 based card is running Atheros driver version 7.6.1.204.

Tests conducted with a PC that was connected via Gigabit Ethernet to the router. All router settings were tested under the wireless and advanced wireless areas. This includes:

802.11n only, 802.11n + 802.11g, 802.11n + 802.11g + 802.11b, 802.11g, 802.11g + 802.11b
20mhz only, 20/40 auto, 40mhz only (in 802.11n mode)
Encryption off, WPA2/AES (default setting I use)
Signal strength low,high
Extra Protection on/off,
WMM on/off,
Short GI on/off,
auto channel scan, channel 1, 7, 11

What I am struggling to work out is why an Atheros AR9001/AR9003 based router has problems communicating with an AR5008 network card, that seems the most puzzling to me.

Firmware version 1.01

edit: I should also mention that there are a lot of errors and RX dropped under 2.4ghz statistics.

edit: Managed to get the 4965ABGN card working by rebooting the computer. Seems to work well on both channels, still unable to get the other cards to work.

[smlunatick]

I have also observed that most Intel Centrino wireless adapters are extremely "pitiful" when using the 2.4Ghz radio, especially the 4965ABGN.


BTW: At what access speed is the 4965ABGN getting when on the 2.4 Ghz radio?

[Z3r0]

4965ABGN is able to get 4-6MB/s on the 2.4ghz radio and 6-8MB/s on the 5ghz radio. Those are the speeds to an Ethernet connected PC, the laptop was 5-10 m away from the router. Up close to the router at 2-3 m the speeds increased substantially to > 10Mb/s on the 5ghz radio.

The other 2 cards are still broken on the 2.4ghz band with the DIR-825.

I actually have an SMC SMCWGBR14-N which is 2.4ghz draft2 N and the web interface is exactly the same as the DIR-825. But it has the older Atheros AR5008 chipset instead of the AR900x series chipsets. I think that when I first got this router it too had a similar problem that was resolved via firmware update, so it could just be a matter of dlink integrating the latest Atheros wireless drivers into the DIR-825. The SMC router works perfectly with all my equipment, the speeds are good and the signal strength is excellent in all locations in my small house. It has 64MB ram, 270mhz processor and 3 antennas whereas the DIR-825 has 16MB ram, 300mhz processor and 2 antennas.