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What you’re seeing is not a relic from the past but a modern external antenna for a mobile signal booster system. While it might look like the antennas used by truckers for CB radios decades ago, its job today is far more advanced. Instead of handling truck-to-truck chat, it works to catch and boost weak cell phone signals. This allows phones, tablets, and mobile hotspots to stay connected in places where the signal is usually very poor or nonexistent
