Bird’s RF Line Sections are durable, field-tested couplers designed for precise measurement of forward and reflected power, making them ideal for real-time transmitter monitoring, connecting antennas or loads, integrating Plug-In Elements for accurate readings, and maintaining signal integrity in high-power systems. Available in various connector types and element socket configurations, these line sections are trusted worldwide in laboratories, field operations, and broadcast systems. From bench testing to field deployment, Bird 7/8" Thruline RF Line Sections deliver the durability, accuracy, and flexibility RF professionals rely on.