RF Line Sections

RF Line Sections are precision-engineered components used in RF power measurement systems. They are installed in the transmission path between an RF transmitter and an antenna or load, allowing compatible plug-in elements to measure forward and reflected RF power. Bird’s RF Line Sections are designed around a 50-ohm nominal impedance and are available in multiple line sizes and configurations.

Key Features

• 50 Ohm nominal impedance
• Designed for accurate RF power measurement
• Available with single or dual element sockets
• Dual-socket versions support simultaneous forward and reflected power measurement
• Compatible with Bird Plug-In Elements
• Suitable for transmitter-to-antenna or transmitter-to-load applications
• Available in 7/8″, 1-5/8″, 3-1/8″, 4-1/16″ and 6-1/8″ line sizes
• Various connector configurations including QC, N-Type and EIA-flanged options

RF Line Section Specifications

For example, Bird model 4230-018 is a 7/8-inch line section with an N-Type female connector, while larger rigid line sections are available for higher-power applications.

Applications

RF Line Sections are commonly used for:

• RF transmitter testing
• Antenna system testing
• RF power measurement
• Forward/reflected power measurement
• VSWR monitoring
• Broadcast systems
• Communication systems
• Laboratory RF testing
• High-power RF transmission systems

The correct plug-in element should be selected according to the frequency range, expected power level and line-section size of the application.