This product comes from Alaris Antennas catalogues

UHF Interferometer


The DF-A0100 is single band 100 to 500 MHz antenna array for use in high precision DF applications. The antenna features hardening against lightning-induced surges with an optional lightning conductor attachment available for added protection. Alternately, an optional omni-directional monitoring antenna attachment can be used to provide an additional monitoring channel. The full-size elements give excellent DF sensitivity. Ultimate angular resolution for strong signals is well under 1°. Dipole elements provide good crosspolarisation rejection, and fair performance for signals arriving from above or below the horison. This DF antenna is designed to be used with a 5- channel phase-sensitive receiver, and correlative algorithm. Calibration of the antenna can be performed on request.

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Frequency range 100 - 500 MHz
Channels/elements 5
DF method Correlative interferometer
RMS accuracy < 1 ° (see note 1)
Polarisation Vertical
Omni-output With optional monitoring antenna attachment
Nominal input impedance 50 O
Antenna outputs 5 x TNC(m) pigtails extending 0.2 m from switch interface flange
Mechanical Flange for tower/shelter mounting Switch interface flange
Dimensions (Ø x h) 1480 mm x 2135 mm 2000 mm x 2120 mm (with MISC-A0088)
Total mass < 50 kg
Wind survival 180 km/h (without ice)
Temperature (operation) -40 °C to +70 °C
Lightning - Protected against lightning induced surges - Optional lightning conductor attachment (MISC-A0088) will provide a measure of protection against direct strikes (see note 2)
Humidity 95%

    Product Applications

    Signals Intelligence
  • Radio Direction Finding
  • C-ESM