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Leading-edge technologies in closed space communications

OFA On Frequency Amplifier System

Clear signals. All the time.

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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

  • Flexible frequency band from 160 MHz to 800 MHz
  • Distributed power capable
  • Low component count
  • Compatible with Tunnel Link
  • Solar-powered version

Benefits

  • Provides complete and reliable system radio coverage
  • Increased safety and productivity
  • MSHA-, West Virginia- and Pennsylvania-approved radio network
  • Safe, MSHA-approved underground power supply – capable of a 24-hour battery back-up.
  • Automatic Gain Control can save man-hours and money in maintenance and production costs
  • Tunnel Radio products are backed by the nation’s most comprehensive service network.

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Tunnel Voice Brochure

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Leading-edge technologies in closed space communications

Tunnel Radio creates leading-edge technologies in closed space communications that serve the needs of mining operations, rail transportation, oil and gas operations, and industrial systems worldwide.

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