> > The iMac sometimes, suddenly and with no apparent reason, >> shows the AirPort as "out of range" or "unavailable?, >> _no_ AirPort signal, >> even tho I can see with AirPort Administrative Utility on the other >> computer that the AirPort is working. >> >> When it changes, it changes instantly from a "strong" signal to "out >> of range", or v.v. It does not fade in and out. >> I infer the lines are not vertical and horizontal because the graph > > prepresents a running average. > >I had similar problems, although my AirPort is connected to a cable modem. >It has nothing to do with DSL. > >My guess is that you or a neighbor have a cordless phone, one of the 2.4 >gigabyte jobs. My problem started when I got that phone. It is documented >that those phones can interfere with AirPort signals, and it only happens >intermittently. Sometimes if I change the channel on the phone, the problem >goes away. Usually, if I just pull the power plug out of the AirPort for 30 >seconds and plug it back in, it will re-boot and be fine.
Thank you for a good guess. I have spoken to the neighbors and ruled out cordless telefones. It only happens on one computer. It did not used to happen on that computer. It sometimes changes as I close a program or roll the cursor over an icon, suggesting software is changing settings, but software does nothing without hardware, and v.v. so I can't be sure. How do you change the channel? The next meeting of the Louisville Computer Society will be October 22 For more information, see <http://www.aye.net/~lcs>. A calendar of activities is at <http://www.calsnet.net/macusers>.
