Communications solutions

in more than 1.000 mines

Communicating mines

in the 5 continents

Innovation and

continuous improvement

Solutions

DRS

System

DRS allows multiband on the same underground network infrastructure

  • Rugged and redundant.
  • Synchronization.
Learn More

Leaky Feeder

System

We communicate underground and surface with equipment specially manufactured for these environments

  • Avoid noise
  • Redundandant
Learn More

Value Added

Systems

SIGMA is permanently connected with mines; we know their problems, we design and produce solutions to them.

  • Safety
  • Productivity
Learn More

How It Works

The system heart is the Head End, it sends voice and data communications to the tunnels using leaky feeder cables, providing for underground and surface wireless communications. To keep communications clear and distinguishable, it is required to include amplifiers every given sections. If extra tunnel needs communications, it is required to branch cables, using Branch units.
icono-infografia

VHE: Head End

It distributes all the information to spread communications signals on the surface and underground.

icono-infografia

VLAD: Amplifier

It keep up signals for clear communications

icono-infografia

VBU1: Single Branch

Splits LF cable on two, protecting signals

icono-infografia

VLAD: Amplifier

It keep up signals for clear communications

icono-infografia

VLAD: Amplifier

It keep up signals for clear communications

icono-infografia

VPC2 Power Coupler

It inserts DC power into the leaky feeder network, one circuit to each end with very low insertion loss, IP67.

icono-infografia

PSU:

Power supply with battery backup

icono-infografia

Remote Unit

It receives the information through the fiber optic network, reconverts into RF signal and distributes it to the radiating cable network.

Master Unit

It converts signals for digital distribution by fiber optic to Remote Units

icono-infografia

VBU2: Double branch

Splits LF cable on three, protecting signals

icono-infografia

VLT: Line termination

icono-infografia

VLAD: Amplifier

It keep up signals for clear communications

icono-infografia

VLT: Line termination

icono-infografia

VLAD: Amplifier

It keep up signals for clear communications

icono-infografia

VSA: Antenna Stope

icono-infografia

last lorem

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam et.

The Master Unit captures all the signals on the surface and distributes them to the tunnels via fiber optics to the Remote equipment, which sends wireless communication signals through radiant cables. It allows to include more than one band simultaneously. With the DRS system, it does not matter which system you want to add, the network is already installed.
icono-infografia

Master Unit

It converts signals for digital distribution by fiber optic to Remote Units.

icono-infografia

Remote Unit

It receives the information through the fiber optic network, reconverts into RF signal and distributes it to the radiating cable network.

icono-infografia

Remote Unit

It receives the information through the fiber optic network, reconverts into RF signal and distributes it to the radiating cable network.

icono-infografia

Remote Unit

It receives the information through the fiber optic network, reconverts into RF signal and distributes it to the radiating cable network.

We have provided communications solutions in more than 1000 mines and tunnels distributed in 5 continents

  • Low cost and high performance
  • We add innovation and experience on the communication systems design
  • Added value to integrate security and productivity solutions on state-of-the-art communication systems