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Airport Extreme - G faster than N issue
Posted by: rouderon
Date: March 09, 2016 09:12AM
I have a late '08 iMac that consistently shows wireless G about 10-20mbps faster than N. I tested it on a MBP (2007 model) and I'm getting equal speeds for both. Is this a problem with the wireless card in the iMac - or a software issue?
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Re: Airport Extreme - G faster than N issue
Posted by: N-OS X-tasy!
Date: March 09, 2016 10:09AM
The 802.11n specification was ratified in September 2009. Your Late 2008 iMac very likely uses a per-ratified version of 802.11n that may not be 100% compatible with the final version of the spec.



It is what it is.
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Re: Airport Extreme - G faster than N issue
Posted by: silvarios
Date: March 09, 2016 01:29PM
Quote
N-OS X-tasy!
The 802.11n specification was ratified in September 2009. Your Late 2008 iMac very likely uses a per-ratified version of 802.11n that may not be 100% compatible with the final version of the spec.

That's probably not the problem. This 2007 MacBook is faster on 802.11n than 802.11g. Original....Broadcom Atheros card.
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Re: Airport Extreme - G faster than N issue
Posted by: silvarios
Date: March 09, 2016 01:31PM
LAN or Internet? What router? If the MacBook Pro is much further away from the router and you are using 5 GHz N, that could be the problem. Higher frequency, signal drop off is worse.
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Re: Airport Extreme - G faster than N issue
Posted by: N-OS X-tasy!
Date: March 09, 2016 01:45PM
Quote
silvarios
If the MacBook Pro is much further away from the router and you are using 5 GHz N, that could be the problem. Higher frequency, signal drop off is worse.

This is true. I saw a similar issue with my 2011 iMac. Switching to 2.4 GHz, either G or N, resulted in much better throughput.



It is what it is.
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Re: Airport Extreme - G faster than N issue
Posted by: rouderon
Date: March 09, 2016 02:35PM
I'm using a 5th gen Airport Extreme. I set the MBP right beside the iMac to test (so there would be no question). As with my iPhone post above, I think I'm about to nuke/pave the iMac. I have a WordPress website that all of a sudden I can no longer access from the iMac (but can from all other Macs & pc's in the house). I've tried flushing dns, deleting caches, etc, but no matter what, when I go to the page it gives me a server error. I have no problem with all other websites I've tried to access. So, I'm starting to think there's a software problem on the iMac. Prior to now, I've always got great wireless N speedtest results (usually better than G - if I remember correctly)
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Re: Airport Extreme - G faster than N issue
Posted by: RAMd®d
Date: March 10, 2016 12:56AM
As with my iPhone post above...

I wonder if this is more an AirPort problem than an iPhone/iMac problem.






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Re: Airport Extreme - G faster than N issue
Posted by: rouderon
Date: March 10, 2016 07:55AM
Good thought, Ram, but the drain is still happening when I'm out & about :-(
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Re: Airport Extreme - G faster than N issue
Posted by: silvarios
Date: March 10, 2016 04:47PM
That's curious. It has to be a device issue if the problem persists to other locations.
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