OFA On Frequency Amplifier System

Clear signals. All the time.

Seamless coverage with OFA

Even in the densest forests and deepest mountain passes, Tunnel Radio provides seamless coverage with our OFA, On Frequency Amplifier System. Similar to Tunnel Link™, OFA is an extension for GE LOCOTROL® Distributed Power and for Positive Train Control systems.

OFA connects to existing base sites wirelessly, with adjustable frequencies. It’s compatible with Tunnel Link and Tunnel Voice, and it can run on solar power if a wired power source is unavailable.

OFA™ – On Frequency Amplifier System from Tunnel Radio

Features & Benefits


Brochures & Product Sheets

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Whatever you decide to do next, you’ll be impressed with our approach to assessing your needs and our on-target, cost-efficient recommendations. We guarantee it.