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DF Antenna with Integrated Monitoring


The DF-A0068 direction finding antenna covers a frequency range of 20 MHz to 1.3 GHz. An integrated monitoring antenna, working up to 1.3 GHz, gives a high sensitivity omni on the same axis as the DF antenna, without interference between them.The full-size elements on all bands give excellent DF sensitivity. Ultimate angular resolution for strong signals is well under 1° for most of the frequency range. Dipole elements provide good crosspolarisation rejection, and fair performance for signals arriving from up to 15° above or below the horison. The integrated monitoring antenna is mounted above the band 2 DF antenna. A large passive bi-conical antenna, it gives good sensitivity over the whole frequency range. This DF antenna is designed to be used with a 2-channel or 5-channel phase-sensitive receiver, and correlative algorithm. Characterisation of the antenna can be performed on request.

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DF frequency range Band 1: 20 - 400 MHz Band 2: 400 - 1300 MHz
Nominal input impedance 50 O
Antenna type 5-element DF interferometer
Polarisation Vertical
Output cables connectors
Frequency range 20 - 1300 MHz
H-Plane beamwidth 360°
E-Plane beamwidth 60° nominal
Azimuth ripple Better than ± 3 dB
VSWR < 3:1 for 95% of band
Polarisation Vertical
Connector type N-type male on cable
Nominal impedance 50 O
Cross-sectional wind area 1.30 m²
Maximum wind speed 160 km/h (without ice load)

    Product Applications

    Signals Intelligence
  • Radio Direction Finding
  • C-ESM

    Design Features

  • Full-size DF Wideband DF 5-element interferometer Optimised for 2-channel receivers High sensitivity omni antenna integrated MECHANICAL FEATURES: Designed for tower-mounting Disassembly system allows antenna to be broken down into manageable parts Assembly can be performed by one person in 15 minutes