Ultracomm® VHF

With a range of up to 700 feet, Ultracomm® VHF underground radio system incorporates a base interface unit with repeaters and network interface, cable splitters, VHF amplifier units and point antennas where signal is needed most. Ultracomm is fully compatible with Tunnel Radio’s MineAx® tracking system for personnel and asset tracking and gas sensing. Options include remote relay control from portables, wireless data, tracking and automatic gain control. Amplifiers can also be “upgraded” to include Automatic Gain Control (AGC), and are also available as Integrated Amplifiers, with Tracking capabilities built-in.


Distributed Antenna System

Our wireless communication system utilizes digital distributed antenna system technology, which is both rugged and highly dependable. It provides lower installation and maintenance costs than other systems. Its durability allows for consistent communications, which can not only shorten response time in emergencies, but also maintain or increase productivity.


  • Latest technology multi-channel amplifiers
  • Automatic Gain Control (AGC)
  • External LED status of RF power
  • Fault monitoring system
  • Distributed antenna-compatible
  • Voice Alert™ Stat-Alert™ compatible
  • Compatible with MineAx tracking and tagging system
  • Agile – interoperable with competitive systems


  • Provides complete and reliable system radio coverage
  • Safety and productivity shows remarkable increases
  • Highest power VHF amplifier on the market
  • MSHA, West Virginia, and Pennsylvania approved radio network
  • MSHA approved underground intrinsically safe power supply – capable of a 24 hour battery back-up.
  • Utilizing the Automatic Gain Control saves man hours and money in maintenance and production costs
  • For outstanding ‘after the sale’ service, our products are backed by the most comprehensive service network in the USA