Our detailed manual includes a power loss chart (e.g., 2:1 SWR = 11% power loss), showing you exactly why tuning matters. Achieve a 1:1 to 1.5:1 SWR for best performance across the 27MHz CB band. Compact and Easy to Use: The SW-111's analog display is simple to read, making it an ideal choice for both beginners and seasoned CB radio users.