ZCG Scalar ZN3-SGDB Heavy Duty 6.2dBi Bullbar Antenna


Key Features


  • Covers both Telstra Next-G and Optus/Vodafone 900MHz at 6.2dBi

  • All other networks (3G 2100MHz and 4G) at 3dBi

  • Removable whip for safe storage

  • Heavy duty spring & radome, full brass radiator design

  • 100% Australian made.




  • This is the heaviest duty bullbar antenna available, designed for the harshest environments and rough treatment

  • Weighing in at 1.3kg and 1200mm length, this antenna has solid copper radiating elements for maximum durability, and an allen-key removable whip design for low-clearance areas, and for safe storage

  • You'll typically see RFI brand antennas on fleet and emergency vehicles in regional and rural areas, but if you frequent unsealed roads or rough terrain ZCG's bullbar antenna series are the preferred option

  • The ZN3-SGDB antenna's solid brass internals are practically unbreakable, where as circuit-board designs can fracture with extended use on extremely rough terrain.




  • The high quality electro-polished stainless steel barrel spring dampens vibrations while travelling

  • 5 metres of RG58 low loss cable side exits from the aluminium mount ferrule, pre-terminated with an FME Female connector for attaching to your cradle or patch lead

  • To install, simply secure the antenna firmly into any bracket with a 13mm (½”) minimum diameter hole using the bolt and washer provided

  • The typical mounting point for this model is to a vehicle bull bar, but many other mounting options are available with our extensive range of vehicle brackets.


Specifications / Frequency


Australian Network Compatibility
Telstra Next-G™ (850MHz)
New Vodafone Network (850MHz)* *Please check Vodafone Coverage Map.
Optus Regional 3G (900MHz)* *Please check Optus Coverage Map.
All carriers - calls & text (900MHz)
Telstra 4G (1800MHz)
Optus 4G (1800MHz)
All carriers - 3G internet (2100MHz)* Please check your network's Coverage Map.


Electrical Specifications


  • Frequency Range: 824-960MHz & 1710-2170MHz

  • Input Impedance: 50Ω

  • VSWR: <1.6:1

  • Polarisation: Vertical

  • Radiation: Omnidirectional

  • Vertical Beamwidth: 32° & 57°

  • Maximum Power: 30Watts


Mechanical/Environmental Specifications


  • Construction: Fibreglass radome, brass radiating elements, aluminium ferrule, electro-polished stainless steel barrel spring

  • Cable: 5m RG58 coaxial

  • Connector: FME Female

  • Length: 1200mm

  • Weight: 1.3kg




  • This antenna has a 5m cable that terminates with an FME Female connector

  • The FME Female connector is the most common type of connector for mobile antennas and mates with the FME Male connector found on patch leads and phone cradles.


female FME Connector


FME Female Connector [pictured]


Please contact us if you would like a shorter length of cable, or a different connector and we will customise this antenna for you.


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Brand ZCG
Shipping Weight 0.0450kg
Shipping Width 0.100m
Shipping Height 1.200m
Shipping Length 0.100m
Shipping Cubic 0.012000000m3