PA HELI-18-V2-01-L, Left Hand Circular Antenna

Part #: PA A-HELI-0018-L

LH Circular Polarised, Bi-Directional Mine/Tunnel Antenna; Wi-Fi 5000 - 6000 MHz, 11 dBi
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Product Overview

The HELI-18 forms part of a series of MiniHELI antennas. These antennas are only mini in size relative to their bigger brothers, the HELI-3, HELI-4 & HELI-8, but offer medium to high gain, which makes these antennas ideal for mining tunnels where IoT/M2M connectivity is deployed and can also be used for coverage into the stopes.

The HELI-18 is a set of 5GHz antennas, radiating in both directions (i.e. bi-directional), which make them ideal for the coverage of the 5GHz in mining and other type of tunnels. These antennas are typically used for the deployment of IoT within the tunnel to provide telemetry and mine automation. These antennas are available in both Left Hand Circular (LHC) & Right Hand Circular (RHC) polarised antenna elements to provide optimal decorrelation within a MIMO deployment when using the BRKT-45, resulting in the best of the two worlds; decorrelation due to the polarisation difference and spatial diversity to enhance MIMO performance and RF reliability to service the most severe connectivity within a demanding mining tunnel. The Wi-Fi connection propagates around tunnel bends in a Non-Line of Sight scenario and provides immunity to many Wi-Fi signal disrupting objects such as trains and drilling machinery which appear to obscure the tunnel.


  • Single port 5GHz antenna
  • This antenna is especially designed for mining and other types of tunnels where rapid extension of network is required
  • Bi-directional – radiates in both directions in a tunnel
  • Left & Right Hand Circular Polarised available (for MIMO)
  • Intrinsically safe version available on request

Application Areas

  • Supplementing fibre /leaky feeder cable “Hotspots” to areas to enhance mobility or extend networks to inaccessible areas
  • Underground telemetry and automation
  • Creating of complete underground in tunnel wide data networks and internet/LTE connectivity
  • Seamless connection to personnel using cellular phones and smart devices and tablets
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