Re: Wiring for satelite dish in apartment complex
From 225.14(D), 24 inches. You would want to use a messengered version which has a steel strand moulded into the outside jacket. This is sometimes called figure 8 cable because that's what it looks like in cross section.
That said, this is CATV pole line work and you will need attachment hardware, dead ends etc. as well as the knowledge to work with this cable and hang it. Unless you have done it before I would stay away from it. I would also question the use of RG-11, I would opt for something larger to keep 1Ghz losses low, probably .500 or .625 solid sheath but then you will have to do expansion loops also.
-Hal