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Rugged Wideband DF Antenna


The DF-A0147 is a wideband DF antenna suitable for rugged applications. Based on the more portable DFA0095 product, the rugged version features an upgraded mechanical and environmental design for marine use. The antenna has a loop array for good DF performance at low frequencies where the phase size of the array is small and three pentagonal arrays for the higher frequency ranges. A secondary pentagonal array of dipoles are combined by an internal 5-way low-loss combiner to provide a good omni from 1 to 500 MHz and an integrated bi-conical antenna provides a second omni from 500 to 9000 MHz. A decagonal cylindrical cavity inside the antenna, approximately 350 mm wide by 370 mm high, allows switching, amplification and RF processing to be integrated into the antenna, reducing cable loss and weight. The cavity slides open giving access to the RF unit.

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Frequency range 1 - 9000 MHz
Feed power handling 0.25 W (receive only)
Polarisation Vertical
DF type Correlative interferometer
Frequency bands A: 1 - 90 MHz *1 B: 30 - 1000 MHz *1 C: 1000 - 3600 MHz D: 3000 - 9000 MHz
DF accuracy in azimuth A: 3° RMS *2 B: 2° RMS *2 C: 2° RMS *2 D: 3° RMS *2
Elevation coverage -7° to +7° (full accuracy) -15° to +15° (reduced accuracy)
Frequency bands A: 1 - 100 MHz *3 B: 50 - 500 MHz C: 500 - 9000 MHz
Monitoring antenna types A: Connector at top of antenna B: Combined 5 dipoles C: Bi-conical antenna
GPS antenna Active L1 patch antenna
Compass bracket KVH C100 compass (optional)
Lightning protection On all RF and control cables
Dimensions (h x d) 2264 mm x 1100 mm
Mass 85 kg
Colour Grey

    Product Applications

    Signals Intelligence
  • Radio Direction Finding
  • C-ESM

    Design Features

  • Full-band correlative interferometer. HF capability. Wideband dedicated omni capability. Rugged construction. GPS Antenna.