connectorstv-antenna
I bought a house not long ago, and the coax cable from the antenna that comes through the wall looks like it's been chewed or mangled somehow. It's missing the connector too.
I'm thinking about how I'll want to use this to get TV into this room. So I'll need to put a new end on. How do I do that?
Yes, satellite dishes are frequently powered by DC current over the coax connection. The DC power comes from a "line power inserter" which will attach somewhere to the coax before it reaches the TV's. It may be a single connection or a splitter as well, but either design will connect to an outlet.
Edit: As others have mentioned in the comments below, the injector may also be built into your set top box.
Based on the symptoms so far -- this isn't a dodgy tuner, or a bad cable. This leaves one possibility: something in the bedroom is spewing RF garbage on VHF channel 5, and moving the TV further away from it causes it to pick up less of the garbage, allowing it to "hear" the TV station on that channel.
Can you try moving the TV from the living room into the bedroom? If the living room TV can't pick up channel 5 while in the bedroom, even with an antenna directly attached, then that would lend serious credence to the RFI theory. From there, it's a matter of unplugging things until channel 5 comes back in...
Best Answer
You'd be looking for a coax compression tool. Something along these lines...