HELI-3is HELI-3is N Type socket




Click the image to enlarge

HELI-3is - Poynting 2.4GHz Intrinsically Safe 17.5dBi Tunnel Antenna

  • Circular polarised helical antenna
  • Uni-directional
  • Intrinsically Safe with high resistivity non static radome
  • Proven antenna performance giving maximum range in all directions
  • Versatile installation mounting options
  • High gain over the 2400 MHz Wi-Fi band

Authorised Distributor

Contact us for details




Poynting has fifteen years’ experience in designing and manufacturing antennas for underground mining data networks.  The HELI-3is is an Intrinsically Safe antenna with high resistivity non static radome. This antenna is also suitable for oil/gas chemical environments where IS equipment is required. The HELI-3is is a directional antenna. This antenna give you a low cost network infrastructure
for current voice and data needs in mines and tunnels.

Application Areas:

• Supplementing fibre/cable networks by providing wireless “Hotspots” to areas to enhance mobility or extend networks to inaccessible areas such as mines and tunnels
• Underground telemetry
• Creation of complete in tunnel/mine wide data networks and or internet connectivity
• Seamless connection to personnel using VOIP phones, smart devices and tablets

Download Specification Datasheet including radiation patterns
Frequency 2400 - 2500 MHz
Gain 17.5dBi
VSWR <2.0:1
Feed Power Handling 30W
Input impedance 50 Ohm (nominal)
Polarisation Right-hand Circular
Connector N Type Socket
The connector is factory mounted to the antenna
Environmental conditions Indoor/Outdoor
Temperature Range (Operating) -20°C to +70°C
Flammability rating UL  94 -HB
Product Dimensions (L x W x D) 1050 mm x 150 mm x 120 mm
Weight 2.35kG
Water ingress protection ratio/standard IP 65 (NEMA 4X)
Impact resistance IK 08
Salt spray MIL-STD 810F /ASTM B117
Product safety Complies with UL, CE, EN,
CSA and IEC standards
Package Contents Antenna
Mounting Bracket - two 6mm eyebolts for ceiling mount
UKCA Declation of Conformity Download here 27.07.2022
CE/RoHS  Declaration of Conformity Download here 27.07.2022
Declaration of Conformity to REACH Download here 27.07.2022
TSCA Declaration of Conformity Download here 27.07.2022
ECCN/Dual Use Classification Declaration Download here 27.07.2022
Conflict of Minerals Declaration Download here 27.07.2022
Overview Guide - Mining Tunnelling

Overview Guide - Mining Tunnelling

Overview Guide - Poynting Antenna Solutions

Overview Guide - Poynting Antenna Solutions