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Horizontal Log Periodic Omni Antenna 4-30MHz

Rev : 02 | Rev date : 25 Nov 2021

The HLPO430 Log Periodic Antenna is a high-performance, omni-directional, horizontally polarized antenna designed for medium to long-range communication circuits.
The smooth omnidirectional azimuth radiation pattern provides reliable communications at all bearings. The two-layer stacked element design provides very high antenna gain characteristics and elevation patterns that provide the optimum take-off angle for each operating frequency. 
Horizontal polarisation ensures that ground losses are almost eliminated, removing any need for ground screens or ground radials.


  • Exceptionally smooth omni-directional azimuth patterns make this antenna ideal for long-distance ground-to-air and shore-to-ship applications.
  • The stacked element design results in optimum elevation patterns and take-off angles.
  • Horizontal polarisation removes the need for ground screens or radials.
  • Power rating options from 1kW to 25kW.
  • Available in standard and heavy-duty (cyclonic) wind-rated versions.

Technical features

Electrical Specifications

Gain dBiUp to 10, refer to graph
Azimuth Radiation PatternOmni-directional - refer to azimuth pattern plots
Take-off Angle degreesRefer to elevation pattern plots
VSWR<2.0:1 typical, 2.5:1 max
Maximum Power Rating kW25 average, 100 PEP
Input ConnectorN-type (1kW)1-5/8" EIA (10kW)3-5/8" EIA (25kW)
Impedance (unbalanced), ohmsΩ50

Mechanical Specifications

Mast Height m (ft)30.3 (99.4)
Wind Survival Rating (No ice) km/h (mph)Standard model: 180 (112)
Heavy duty model: 306 (190)
Wind Load Commentto AS1170:2.2011


Material - GuysGalvanised steel
Material - MastHot dipped galvanised steel

External Document Links