802.11n Problem

What kind of router? 2.4GHZ only - or also 5GHZ?

What speeds is your iSP providing you? That will be your limitation.

Is it capable of 5GHZ? If so try switching.

If your MB does not connect in "n only" it will connect as 802.11G = 54Mb
Seems to be as if the router causes that issue - is an updated firmware available?

Can I throw in a quick question here by asking, How do you have or can you have N-only enabled on your MBP or AirPort Extreme?

You can't enable "N"-only on your MBP as standard user

I could set my Belkin N router (F5D8236-4 v2) with my Macbook Pro setting the Wireless Channel to 9 , Bandwidth to 20/40Mhz, Protected Mode On and setting the security as follows:

Security Mode: WPA/WPA2-Personal (PSK)
Authentication: WPA-PSK+WPA2-PSK
Encryption Technique: TKIP + AES

Now I'm connecting to 130Mbps, before I got 54MBps.

Can you re-paste the AirPort info from system profiler ? The Country code is missing in the version you posted. That seems very odd. Whats the make/model of your wireless router ?

Hi,
well, I've got my Speed up to 130 but mysteriously it won't speed up to 300 Mb/s. That's under MacOS 10.6. Win7 (bootcamp) on the other hand shows me 300 Mb/s! How can that be?

btw: did you check your network settings. Under "Ethernet" make shure to let your mac choose the correct configuration (same for "MTU"). Also switch of your routers "mixed" setting. Choose Wireless-N only to get full speed (you probably also set the speed to 300 Mb/s not AUTO)...

If anybody has an idea for my problem... 🙂

Just solved an issue with Atheros card and 10.6.3, together with new Airport Extreme Dual Band router whereby the 5GHz network would show up on the iPad, but not on my MacBook Pro.

I noticed that the default channel for the 5GHz network was set to automatic at Channel 36, but that it showed up in the Summary of Airport Utility manual setup as Channel 108.

To get the 5GHz network to appear on my MBP, I set the channel manually to 40 and saved settings. When the Airport Extreme rebooted, I was finally able to see the 5GHz network and connect at a higher speed. Whereas before the 5GHz network wouldn't even display, my successful system profile shows as follows:

en1:
Card Type: AirPort Extreme (0x168C, 0x87)
Firmware Version: Atheros 5416: 2.0.19.10
Locale: FCC
Country Code: GB
Supported PHY Modes: 802.11 a/b/g/n
Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
Status: Connected
Current Network Information:
Spanky (5 GHz):
PHY Mode: 802.11n
BSSID: 90:84:d:d9:9b:a2
Channel: 40,-1
Network Type: Infrastructure
Security: WPA2 Personal
Signal / Noise: -56 dBm / -96 dBm
Transmit Rate: 216
MCS Index: 13

I have exactly the same problem. A Mac Mini in the same WLAN shows connection speed 130 Mbps but the MBP 54 Mbps only. How do I enable full N-speed? I tried installing AirPort Extreme_802.11nEnabler software but it said my computer does not meet the HW requirements.

My MBP's system profiler shows this:

en1:
Card Type: AirPort Extreme (0x168C, 0x87)
Firmware Version: Atheros 5416: 2.0.19.10
Locale: ETSI
Country Code: FI
Supported PHY Modes: 802.11 a/b/g/n <------- n supported
Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
Status: Connected

And WLAN information:

<my essid>:
PHY Mode: 802.11n <----- WLAN is in N-mode
BSSID: 1c:af:f7:62:60:ab
Channel: 1
Network Type: Infrastructure
Security: None
Signal / Noise: -57 dBm / -96 dBm
Transmit Rate: 54 <--------------------- only

Found the solution. I was using WEP security earlier and in fact my WLAN box said that with WEP it is only possible to get g-class speed (although I don't know why Mac Mini got 130 Mbps). I switched to WPA2 encryption and now MBP shows 130 Mbps as well.

Warp speed Mr Sulu.