The Secret World (TSW) Kingsmouth: Dead Air (Investigation). You need to locate the antenna. It's on the roof of a building between the quest. Dead Air - The Secret World: Quest Name Dead Air Region Solomon Island Zone Kingsmouth Town Quest Giver/Location Ellis Hill at the airport. Secret World - Dead Air - Tier 4/5 - Decipher the coded transmission Please note: this is not a walk through.