rcnixon: I won't argue about ingress into a cable system. It CAN be terrible. I maintained an institutional network in St Paul, MN for over a year. The network was used for city offices, schools and a few other government entities to send video and data to each other. This was prior to subscriber level cable modems. It was 58 amps deep, all coax. Ingress would wipe out a lot of data sent over that network. It was a MAJOR PITA to maintain because of all of the storm damage, animal chew (mainly squirrels(aka tree rats)), cracked shielding, poorly done connectors and other induced problems. However, there is STILL a point where the RF tx pwr exceeds the capability of the the cables. And, I've even fought with the electric companies to repair their faulty lines causing interference with our head end reception.