I plugged my Air Port Express into my Mac.
I then had my printer connect to "Howard Brazee's Network" instead of
Affinity (the name of my community).
I opened up keychain, entered "Airport", and found 3 instances of
"Howard Brazee's Network", two instances of "Netgear", and one
instance of "Howard Brazee's Airport Express".
My first attempt typed in the Airport Express password - the printer
told me it was not a valid address. That was dumb of me.
All 3 Keychain passwords of "Howard Brazee's Network" had the same
password. I entered that in my printer, waited a while and was told
that it was unable to connect to that network.
I went to the other room and tested my WII (which had been connected
to my network at the other house), and it doesn't see the network.
I rebooted my computer and noticed after it rebooted that iTunes did
not see my phone nor pad. My computer, my pad, & my phone all showed
that they were connected to "Howard Brazee's Network". Obviously it
doesn't do any good for my computer to be connected to itself. I
changed it back and experimented with my iPad. It sees the network
when connected to "Affinity", but iTunes doesn't see it unless it's
plugged directly into my computer.
Airport utility sees a wireless client with a 169.254.2.150 IP
address. I expect that is the Kodak printer not succeeding at a
WPA2-AES setting. Printing the current Network Configuration shows
no IP address.
So either I will have to find a way to use the Affinity LAN for my
printer, or make sure my other devices don't switch to the strongest
signal in my apartment.
I just unplugged my Air Port Express for now.