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Time Capsule / Airport Extreme N 5ghz problem with MacBook Pro
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Fresh-Faced Recruit
Join Date: Jul 2008
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Problem - MacBook Pro (model MacBookPro3,1 - 2.2 Ghz Core 2 Duo) with internal airport extreme (firmware 1.4.3.1) with OS 10.5.4 will not connect to Time Capsule wireless N at 5ghz frequency. I can connect with b/g compatibility or 2.4 Ghz option set. I have searched Apples forums to see this problem elsewhere but no resolution has been documented that I can find. Has anyone else experienced this and hopefully, is there a way to fix this?
Thanks for any help.
B
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Moderator  Join Date: Dec 2000
Location: Polwaristan
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You may need to run the 'n' enabler if it didn't run already.
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Fresh-Faced Recruit
Join Date: Jul 2008
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Originally Posted by Cold Warrior 
You may need to run the 'n' enabler if it didn't run already.
Thanks for the suggestion - I have already run the enabler and can connect N on 2.4 Ghx (130 Mbps) But cannot connect at the faster 5Ghz frequency.
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Moderator Join Date: Dec 2000
Location: Polwaristan
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If it's set to 5 GHz, does it show up in your airport menu bar and won't connect, or does it not show up at all?
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Fresh-Faced Recruit
Join Date: Jul 2008
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It shows up in menu and then fails on connect and then disappears from menu.
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Junior Member
Join Date: Feb 2008
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is MBP even compatible with 5GHz?
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Fresh-Faced Recruit
Join Date: Jul 2008
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It is compatible - those with Core 2 Duo processors (like mine) support 802.11 a/b/g/n. I can connect to 802.11n at 2.4 Ghz which gets 130Mbps but I believe it should also connect at 5Ghz which would increase network speed to 300Mbps - which would be a help since I am trying to connect to a Time Capsule.
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Fresh-Faced Recruit
Join Date: Jul 2008
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Update - I can't say for sure what corrected things, but after a week of this not working, I decided to try things again - and it is working.
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Fresh-Faced Recruit
Join Date: Aug 2008
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I experience exactly the same issue with my MBP Core Duo with an AirPort Extreme. Very very frustrating... Anybody else?
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Forum Regular
Join Date: May 2001
Location: New Haven, CT, USA
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I had a somewhat similar experience, but a bit experimentation showed that the problem was that the MBP gets significantly worse reception on 5 GHz than on 2.4 GHz. If I set the Time Capsule network to n only, 5 GHz I can't connect from the room where my MBP usually is, but my wife's MB can, and I can connect if I go downstairs to the room where the Time Capsule is. On the other hand, I can get a 2.4 GHz n signal that's adequate in both places.
I was thinking about trying to fix this by getting an AP Express (new model with n) and using it to extend the network -- that used to work with my old Express b/g network. I assume that the "n" capability of the new AP Express includes 5 GHz. But comments seem to indicate that the AP Express is quite flakey when used in this way. Any relevant experiences?
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