EIA FLANGE for 7/8″ FEEDER Cable

Description

The EIA (Electronic Industries Alliance) Flange series is the industry standard for high-power, low-loss RF interconnection. This variant is specifically designed for 7/8″ Feeder (Corrugated) cable, the primary choice for medium-to-long transmission runs where low attenuation is critical. Unlike standard threaded connectors, the EIA flange utilizes a bolt-circle mounting system with a high-pressure O-ring gasket, ensuring a gas-tight, stable connection that can be pressurized with dry air or nitrogen to maintain dielectric integrity in outdoor tower environments.

Maintaining a strict 50-Ohm impedance, this connector is optimized for Low PIM (Passive Intermodulation) performance, essential for preventing signal interference in multi-carrier wireless and broadcast networks. It features a high-conductivity inner contact and a robust mechanical clamp for the 7/8″ corrugated outer conductor, providing a seamless transition and excellent VSWR across the VHF, UHF, and microwave spectrum. Manufactured with silver-plated or tri-metal (white bronze) plated brass, it ensures maximum conductivity and long-term resistance to environmental oxidation.

Key Technical Advantages

• Standardized High-Power Interface: The 7/8″ EIA flange design allows for a rigid, secure connection to high-wattage transmitters, combiners, and antenna systems.

• Low PIM Optimization: Engineered with high-pressure contact surfaces and non-magnetic materials to minimize signal distortion in sensitive multi-band networks.

• 7/8″ Feeder Precision Fit: Calibrated for the specific geometry of 7/8″ corrugated coaxial cable, ensuring a high-strength mechanical bond and optimized electrical path.

• Weatherproof & Pressurizable: Integrated O-ring grooves allow for a fully sealed connection, preventing moisture ingress and allowing the system to be pressurized for maximum reliability.

• Superior Mechanical Rigidity: The bolt-on flange pattern provides unmatched resistance to vibration, wind load, and thermal expansion compared to threaded interfaces.

Key Features

• Interface Type: 7/8″ EIA Flange (Standardized bolt pattern).

• Termination Method: Mechanical outer clamp and high-conductivity inner contact for 7/8″ corrugated cable.

• Cable Compatibility: Optimized for 7/8″ Feeder and equivalent corrugated coaxial cables.

• Premium Construction: Features a silver or tri-metal plated brass body and a high-performance, low-loss dielectric.

• Industrial Application: Ideal for FM/TV broadcast transmitters, cellular base station main feeds, radar installations, and satellite earth stations.

Technical Summary