Quick try would be to set your AP b/s to an arithmetically maximally different channel, if problem is interference on or near the channel you're presently using. On Mon, 2 Feb 2004, John M. Hughes wrote: > I have a Ti 400 running 10.3 with an airport card and an airport > extreme base. I live in a large apartment building and normally have > good reception except that every night about 10:00 PM my signal dies > for 30 minutes to an hour. When I check the menu bar I see that there > is another signal coming in although it is too weak to log onto. Is > there anything I can do to block the other signal(s)? Do you think this > is causing my problem?