Macbook Pro and 5.8 Ghz Channel on WRT610N

I am wondering if anyone has had success with a recent vintage Macbook Pro connecting to the 5.8Ghz channel on a WRT610N.  I can connect with the 2.4 channel without a problem but I cannot maintain a connection on the high channel.  Linksys support told me that the hardware was not compatible with the high channel.  I have tried router settings suggested in this forum but no joy.  If you have had success I would like to know the settings you used.  Thanks in advance for the help.

Is this still an issue?  Sometimes a driver update on the Mac side or a firmware update on the access point side can resolve issues like this.  What, exactly is ther error?  Association drops?  How far apart are the devices?  5.8GHz signals tend to get attenuated more quickly by obstructions.

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