The STL, or studio to transmitter link, is the unglamorous connection that keeps a radio station on the air, and when it fails everything goes dead silent even if every other piece of gear is working perfectly. This episode covers why most stations never built backup STL systems, how broadcast consolidation pulled out the engineers who used to catch these failures fast, and what real redundancy looks like using fiber, cellular bonding, and gear like Comrex and Peplink. It's a case study in how cost cutting quietly makes critical infrastructure more fragile, which is basically the whole tech accountability story in miniature.