randjack,

Being a retired engineer with the Bell System, most high rises built within the last thirty years have at least two copper lines from each living unit down to the main terminal and most have more. Each individual living unit is looped prewired with at least six copper lines so if the lines get cut during the initial concrete pour, all outlets still have service. If the line is cut in more than one place, then all bets are off. But that usually does not happen. So you should not have any problem getting additional copper lines to your high rise apartment. That is not to say that the local phone company may be short of lines to your high rise building. But that is a problem that they will remedy as soon as you order your additional lines.

Ham radio on the other hand be very directional unless you have a penthouse with views in all directions.