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802.11n - only 5GHz and MacBook Pro (2.16GHz)

2128 Views 9 Replies Latest reply: Aug 5, 2007 3:13 AM by benjimouse RSS
David G. Wilson Calculating status...
Currently Being Moderated
Jul 12, 2007 3:08 AM
Hello everyone.

I'm new to the forums, but not to Apple. I have done software development in Xcode (refer the USB Missile Launcher) etc.

I want to post a message to this forum to see if anyone else has come across this issue and if it has been solved. I have searched the forums without luck.

I have the new Airport Extreme that is 802.11n capable. I have successfully attached an external hard drive and printer. And I have run the 802.11n enabler on my MacBook Pro.

The base station is configured currently for Wireless Access on "802.11n only (2.4 GHz)" and I can access my network via the Airport base station using my MacBook Pro. However when I change the base station configuration to "802.11n only (5 GHz) the MacBook Pro can see the network but is unable to connect to it.

I have tried the same test with my wife's iMac 20" and she can successfully connect to the 5GHz network.

Does anyone have any idea what's going on?

System Profiler has the following details about my network card:
Wireless Card Type: AirPort Extreme
Wireless Card Locale: Asia Pacific
Wireless Card Firmware Version: 1.1.8.5
Current Wireless Network: [network name deleted from this posting]
Wireless Channel: 13

- David
MacBook Pro 2.16GHz Core 2, Mac OS X (10.4.10), Airport Extreme 802.11n
  • Duane Level 10 Level 10 (117,955 points)
    David, Welcome to the discussion area!

    Since your Mac is still under warranty, I would contact Apple. The issue you are having is very likely a hardware failure.
    iBook G4 14" 1.42 GHz [1.5GB-60 GB], iMac G5 20 1.8 GHz [2 GB-160 GB], Mac OS X (10.4.10), iBook 466 SE Graphite [DVD-576M-40 GB-AirPort],iMac G4 700/768, iPod Photo 30 GB
  • Jack Howarth Calculating status...
    David,
    It may be that the MacBook Pro is using the 2.4GHz AR5008E-3NG chipset rather than the 2.4/5 GHz AR5008E-3NX chipset. Unless this has been changed with the new 2.2/2.4 GHz MacBook Pro models, I suspect that Apple doesn't actually sell a machine which supports 5 GHz 802.11n wireless. Linksys supports 5 GHz on their WRT-3x0N wireless routers but that feature is undocumented in their specifications and user guides. Their new WRT-150N router only does 2.4 GHz 802.11n wireless.
    Jack
    dual G5 2GHz
  • Duane Level 10 Level 10 (117,955 points)
    Currently Being Moderated
    Jul 12, 2007 8:27 AM (in response to Jack Howarth)
    I suspect that Apple doesn't actually sell a machine which supports 5 GHz 802.11n wireless.


    That is incorrect. The initial Intel Macs contained hardware which works with 5 GHz wireless networks. The Core 2 Duo Macs and Xeon Macs have 5 GHz 802.11n compatible hardware.
    iBook G4 14" 1.42 GHz [1.5GB-60 GB], iMac G5 20 1.8 GHz [2 GB-160 GB], Mac OS X (10.4.10), iBook 466 SE Graphite [DVD-576M-40 GB-AirPort],iMac G4 700/768, iPod Photo 30 GB
  • Jack Howarth Level 1 Level 1 (15 points)
    Currently Being Moderated
    Jul 12, 2007 8:41 AM (in response to Duane)
    I don't have my MacBook Pro handy. Does the System Profiler report if the chipset is a AR5008E-3NX? I could understand them going with the 2.4 GHz chipset since 5 GHz takes a more power to generate.
    dual G5 2GHz
  • Duane Level 10 Level 10 (117,955 points)
    Currently Being Moderated
    Jul 12, 2007 9:13 AM (in response to Jack Howarth)
    I don't have a MacBook Pro handy either.

    As I mentioned above, the initial Intel Macs contained hardware which works with 5 GHz wireless networks. Many users discovered this when they booted into Windows or used Linux. Initially there was no support in OS X for 5 GHz usage.

    Also reference Does the MacBook Pro support 802.11a? which is only one of many sites which document this ability.
    iBook G4 14" 1.42 GHz [1.5GB-60 GB], iMac G5 20 1.8 GHz [2 GB-160 GB], Mac OS X (10.4.10), iBook 466 SE Graphite [DVD-576M-40 GB-AirPort],iMac G4 700/768, iPod Photo 30 GB
  • benjimouse Calculating status...
    Hi, I'm getting this same error "WirelessJoin unexpected status: 8", in the same circumstances described above. The only difference is, for me the solution David found of changing country to Australia (or to any other), from New Zealand has no affect. The same error occurs.

    Hardware is a MBP 2.16Ghz, and Airport Extreme. Both are fully patched.

    Anyone have any suggestions?

    Thanks.
    Macbook pro, Mac OS X (10.4.10)

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