My Internet data connection keeps dropping off. From the wall the coax cable goes into a 5 - 2500 MHz splitter; one line enters the modem and thence into AirPort; the other goes into an television that is never on. When the data stops (and the modem data light goes dark, AirPort goes yellow) I unplug the modem, plug in back in and, that usually works for a few hours until the data stops again. However, when I remove the splitter and run the coax directly from the wall plate into the modem (then into the AirPort) all is well. At all times the AirPort wi-fi signal is strong. There is abut eight feet of coiled excess coax cable between the splitter and the TV. Could that be enough to attenuate the signal to lose the data stream or is this simply a case of needing a new modem? Either way I still hate Comcast.