This product comes from Alaris Antennas catalogues

Dual port Helical Antenna


HELI-A0103 is a dual port helical spiral, right-hand circularly polarised antenna designed operating in the 433 - 435 MHz and 900 - 930 MHz bands. The antenna provides broad beam coverage without nulls or reduction in performance. The antenna features a low VSWR and high gain over both operating bands with a light weight, yet robust radome to protect the radiator.

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Frequency range: Band A Band B 433 - 435 MHz 900 - 930 MHz
Gain: > 12 dBi (typical)
Beamwidth: Band A Band B 35° (typical) 27° (typical)
Polarisation: Band A Band B RHCP RHCP
Nominal impedance: 50 O
VSWR: < 2.0:1
Power handling: Band A Band B 100 W CW 100 W CW
Connector: 2 x N-type female
Overall length: 1382 mm
Diameter: 258 mm (Radome) 691 mm (Mounting flange)
Weight: < 15 kg including bracket
Material: Aluminium
Colour Painted on request
Temperature range Storage: -41 °C to +71 °C.
Operation -31 °C to +55 °C

    Product Applications

    Electronic Countermeasures
  • Communications Jamming
  • Counter UAV

    Design Features

  • High gain High power Low VSWR