Topic: Outdoor network infrastructure for residential application.
Situation: Comcast cable is unable to provide residential cable internet to my home because its a good 250 feet away from the cable "pedestal," and most of its juice is already occupied powering a 300 foot coax run up to my neighbor's house across the street. To solve this problem, I am going to site a cable modem (in a NEMA outdoor-rated enclosure) right next to the cable tap, then bring the signal to my home with ordinary LAN
equipment. I've extensively researched all the options and considered their cost-effectiveness; now I simply need a once-over from an expert to determine if I missed anything.
Question: I've settled on a 250 foot run of direct-bury rated Cat6 cable to the road, using Power over Ethernet injectors/splitters to power the cable modem. I have two concerns here:
1. 250 feet is "within spec" for both PoE and Ethernet data; but its pushing close to the 100 meter limit. How likely is my signal reliability to suffer, pushing the limits like this?
2. Without running a separate 110v power line to the enclosure, I'll have to rely on passive radiators on the enclosures exterior (and a few 12v computer case fans split from the PoE device) for cooling. (Location is SE Michigan; summer highs of 80 degrees F. must be accounted for.) Do you think this will be adequate?