Extending Gen 1 Time Capsule Wireless network with Airport Express N

I am having difficulty setting up my new Airport Express w/ 802.11N (SKU# MB321LL/A) to extend the wireless network from my Time Capsule (SKU# MB276LL/A).
My setup is as follows:
Time Capsule is connected to Cable modem with the following wireless settings:
Wireless mode -> Create a Wireless Network
Allow this network to be extended -> Checked
Radio Mode ->802.11n (5Ghz N only)
Wireless Security -> WPA2 Personal
The issue is the when I attempt to setup the AE to extend the network. I match the settings to the Time Capsule:
Wireless Mode -> Extend a Network
Select the Time Capsule Network
Allow wireless clients -> Checked
Wireless Security -> WPA2 Personal
However after I reset the AE the LED glows Amber and the following problem is reported:
+Wireless Network+
+This AirPort wireless device is set up to join a specific wireless network that can't be found. If you don't see the network that you want to join in the Network Name Pop-up menu, enter the network name and network password if necessary to try again.+
When I check the Airport->Wireless tab the settings were as before.
Any thoughts on this? Thanks.

Welcome to the discussions!
Have you tried to position the AirPort Express close, say 10-15 feet, as a test to see if it will connect that way?
If so, then move it back another 10-15 feet, etc.
5 GHz signals do not travel well or penetrate surfaces very well, so my first thought was that the signal was not strong enough for the Express to pick it up where you had it located.
Message was edited by: Bob Timmons

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Extending Gen 1 Time Capsule Wireless network with Airport Express N

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