BDI CD830-4 Coupler, 8-3/16", Quadruple Port

High Power RF Directional Coupler for Broadcast Transmission

The Broadcast Devices CD830-4 is a professional RF directional coupler designed to sample forward and reflected power on large-diameter transmission lines used in high power broadcast systems. With an 8-3/16 inch line size and quadruple port configuration, this coupler provides accurate RF monitoring without interrupting the main signal path.

Built for High Power FM and Digital Broadcast Systems

Engineered for demanding RF environments, the CD830-4 is suitable for FM, HD Radio, and other high power analog or digital transmission applications. Its large transmission line compatibility supports modern broadcast facilities where power levels and physical infrastructure require robust, precision-built components.

Accurate Forward and Reflected Power Sampling

This quadruple port coupler allows engineers to monitor both forward and reflected RF energy simultaneously. Accurate sampling helps verify antenna performance, detect impedance mismatches, and protect transmitters from excessive reflected power that can cause long-term equipment damage.

Seamless Integration with RF Power Monitoring Equipment

The CD830-4 is commonly paired with RF power meters and site controllers, including Broadcast Devices monitoring systems. Its standardized coupler ports make it easy to integrate into existing transmitter facilities without complex modifications or custom fabrication.

Rugged Mechanical Design for Long Term Reliability

Constructed for permanent installation, the CD830-4 features a mechanically stable design that maintains consistent coupling characteristics over time. This reliability is critical for unattended transmitter sites and facilities where continuous monitoring is required.

Essential Component for RF Safety and Compliance

By providing precise RF power data, the CD830-4 supports compliance with operational limits and engineering standards. It plays a key role in preventative maintenance, troubleshooting, and maintaining safe operating conditions in high power RF environments.