A few months ago I had my DTV dish professionally aligned and the picture has been outstanding. We switched to the single cable type LNB gadget and the main connection is in my basement. The line that runs outside a basement "port" up to my 2nd floor DTV unit is two-pieces which are joined in the crawl space. The installer said that the cable signal was marginal and that I should replace it. He was far too busy that day to do it and said he doesn't like crawling through a floorless attic LOL. OK, so the job is mine. The signal finally crapped out but my two other receivers are working just fine with good runs. I want to order a 100' finished cable and and I'm wondering should I get RG6 or RG59 and tell me whether solid copper core or copper-jacketed steel core is adequate. I have used the quad-shield Copper-clad steel core before and never had a problem, but this is the longest run in the house... about 75 feet by my estimation. I'd rather be safe than sorry so that's why I'd rather get a single 100-footer and eliminate the joints. Appreciate the advice. Don't know if we can mention vendors here so that's why I didn't. But there are at least two decent ones I can think of.