Vampire attacks: the connection goes down at sunset, up at sunrise
Short form: is switching from coaxial to CAT5 actually likely to help with nighttime interference? How do I run the cable inside? Should I buy any special CAT5 or just let AT&T provide it?
Yeah, vampires don't exist, but if someone here tells me to rub garlic on my coaxial cable, I will, just in case.
Since I don't know what the important info is, I'll dump it all. Sorry.
I got U-verse service at my new condo unit around the start of May. For the last week or two, at around sunset, the BROADBAND and SERVICE green lights on my 3801HGV go to red blinking, then green blinking, then back to green: down for 39 seconds, up for 2:08. At about sunrise, all starts working fine again.
Trying to insert images in this editor causes "You must install or upgrade to the latest version of Adobe Flash Player before you can upload images." -- some Linux or browser issue. So all I can do is post links to the uvwhatsit screenshots. I think I made each open in another tab/window. I took them during a down period last night, if that matters, a few hours after rebooting. (Rebooting is no help, by the way.)
The original installer told me that I was at the distant edge of possible service; that the line with me added was overloaded, so he had to call networking to add a little capacity, which got it just under 100%; the building's interconnection point (sorry, I don't know the right term) was on the other side of the building; he tried to run my signals over my internal phone lines but was not able to get it to work, so he resorted to using the installed coaxial cable. The timing test I ran looked fine -- just under 6 Mbps download. The latest service person said that, while at that moment (afternoon) the signal looked OK to him, the long run from the connection over coaxial cable was causing me problems and told me I had to have them run CAT5 from that box. He put that in the notes, so I wonder whether I can get any more service calls until that's done. He also said that running CAT5 the length of the building and then converting to coaxial wouldn't help -- the converter box would itself drop the signal strength.
I managed to find a few other similar postings here where people replied that this is a known problem due to electronic interference from devices that turn on at night.
Is switching from coaxial to CAT5 likely to help my particular problem?
If so: I am a first-time homeowner and I have no handyman experience. I believe he said that AT&T would do the exterior wiring for free, but I guess I would then have to ask my handyman+electrician friend to get it inside. What do I ask him to do? Previously, Time-Warner had put their own box outside and had run coax on the outside wall to two places where they drilled thru the wall to outlets inside. Will it be a similar thing here?
I like higher quality products and Fixing Problems Right once and for all. Should I let AT&T provide cable, or should I go get some super-duper single-crystal unobtanium cable?