[mozart11]

My first Airport (first release) N (main) connected to the cable modem is in one section of the house. When in that room with my MBP I get near full speeds. 29Mbps out of 30Mbs.
I just bought (a gigabit version) Airport Extreme N (printers) in the other part of the house where the printers are. It sits on my desk. Literally 10 inches from my MBP when I sit at the desk.
I set the Main to "Allow this Network to be extended. I then set the printers Airport to "Join and Existing network.
So now the weird part.
When I sit at my desk my speed has dropped off to 3Mbps!
I assume that being so close to the printers Airport, the MBP logs into it.
But if I unplug the printers AIrport on the desk, and sit at my desk, my speed goes right back to 29Mbps.
So the speed is fast when using the Airport directly connected to the Airport (main)
Now the distance between the two Airports is only 30 feet from room to room.
Is drop off of extended networks normal? This much? Is the MBP to close to the Airport? Overload?
What would cause this? Any way to turn of the internet aspect of the printers Airport but still have my printers for wireless printing?
Strange

[smax013]

To make sure that I understand, you have a printer or two that connect using WiFi. Which "flavor" of WiFi? 802.11b or 802.11g?
My guess is that your printers (or some other device) are using an older flavor of WiFi. If so, then they will "compromise" the speed of an 802.11n network from what I understand. If you are using anything other then 802.11n devices on your 802.11n network, it will slow things down.
If you want to maintain the higher speeds, you will want to setup a seperate 802.11b/g network for the printers that bridge into your wired network and then set the 802.11n Basestation to only use the 5 Ghz radio freq. Make sure that you use different SSIDs for the networks.
See this this thread for some additional info.