Scanner School on Instagram: "Feeling confused by the word "Trunking"? You aren't alone! In Day 12 of our 30-day challenge, I'm breaking down what is arguably the most important concept in modern radio scanning. If you’ve ever wondered how dozens of different agencies can all share the same few frequencies without talking over each other, this video is for you. I use a simple "Switchboard" analogy to explain how a central computer "brain" manages the airwaves and how I set up my scanner to follo