Michael talks to Poppy Wood Booking and Events Coordinator at Bletchley Park Throughout World War Two, Bletchley Park Codebreakers relied heavily on the expertise of radio intercept operators who tirelessly tuned the airwaves for enemy radio signals and transcribed everything they heard. Understanding how to navigate the radio frequency spectrum and the impact of location, weather and propagation was fundamental to their work, ensuring they intercepted as much traffic as possible. Every word was vital for the war effort.