Conflict with Neighbour using another Airport (802.11n)

Hello
I noted recently some slow down in my home wi-fi network and discovered that my neighbour installed a new airport extreme that might be confilicting with mine. I have tried to change channel (automatically set to 7) to 2, 3, 4, 9 and others. It partially solved the problem but if it works for a while, then the problem keeps coming back. I will go to his place tonight, please could you tell me what I should check ?
Also while changing my configuration, I keep having the same error message coming back (on my airport extreme), that is error code -6722 or sometimes -32 or -6. Apparently this is a comon issue to many of you. Could you help me also on that one? Thanks a lot. Pascal

vador300 wrote:
Radio Channel selection: Manual 36(5GHz), 11(2,4GHz)
I have now turned mine to channel 11 and it seems to work.
I would expect that having both units assigned to the same channel would maximize the interference, not minimize it. But if it's working, I won't argue.
However, while applying the changes, I got the error message -(6722). Also sometimes, error -(32)
A Web search showed a number of reports of error -6722, but no one seemed to have an explanation. Sorry.

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Thank you for your comment. But unfortunately, I still need to run my non-N machines. So I think my choices are:
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You'll get 54mbit between the two airport extremes...
Technically yes but the bandwidth available to any client is really only 27 Mbps since all data must make 2 hops and no other data can be transmitted during either hop. Other data can not be transmitted because both base stations are using the same channel.
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HT4145 I have an Airport Extreme bas station now and I want to know if I can use an Airport Express to extend my network or do I have to use another Airport Extreme base.

I have an Airport Extreme Base Station now and I would like to know if I can use an Airport Express to extend my wifi network or do I have to use another Airport Extreme Base Station.

This AirPort Express:
http://www.apple.com/airportexpress/
It is the only Express with 2 Ethernet ports. All others are "old"
Apple does not specify a model number in their product information, but it is A1392 in the U.S. I do not know if Apple uses different model numbers in other countries.

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from the User's Guide?

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Henry,
First I want to Thank you for all you help on many matters.
I am having a problem and i'm hoping you can help.
I bought my 2nd airport express and put it upstairs in my house next to an i mac that does not have a wireless card.
My airport downstairs is connected to my cable modem and is already acting wireless to my ibook.
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"I need to connect a g5 (intel) 10.5.2" did not think Apple ever made this one has a B/G card not N
"PowerBook (PowerPC G4) 10.4.11" has a B/G card not N
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http://support.apple.com/kb/HT4259
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Conflict with Neighbour using another Airport (802.11n)

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