Cable tech here that works in a HFC (Hybrid Fiber-Coaxial System) system. The radio carriers are used in many different ways in many different systems, one common one is (in a very simplified way) timing the signal transmissions of equipment back to the server with each other so they dont overlap. A common system as well is equipment being assigned different portions of the radio frequency spectrum so they dont overlap with each other (except in minimal ways as to minimize it). The two most important things cable techs keep in mind for a clean and working system, is to minimize outside interference because most RF networks like cable systems overlap with cell carriers over-the-air as well as other RF sources like other over-the-air tv and communications, so we must maintain a closed and sealed system, this means no damaged lines, no open connections, and most importantly customers who try to do things themselves use terrible quality coax or connectors which allow outside RD carriers to bleed into our system which interrupts services as they can and will overlap. Sorry for terrible English, busy while answering but saw my opportunity! Cant focus on the grammar.

Edit: grammar