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Manpack/Mobile Watson Watt DF Antenna


The DF-A0201 is a wideband DF antenna intended for onthe-move direction finding from 20 to 6000 MHz. The antenna array is implemented as a three-band vertical stack with the low frequency band enhanced with patented hybrid loop-Adcock technology to provide improved sensitivity vs traditional designs of the same form factor. The antenna presents patterns suitable for the Watson Watt estimation method, as well as 3-channel correlative DF. Band switching is done via an integrated switch and control system. External and internal RF chain calibration is accommodated and a compass and active GPS antenna are also integrated in the antenna. Spring-mounting is directly via the base-mounted MIL DTL 38999 connector interface. An optional isolating extension mast is also available for use on vehicles or marine platforms. This provides improved performance over simply mounting the antenna directly to the structures. The design is ideal for shared platform applications and flexible deployment scenarios, e.g. a boat-mounted antenna can be detached and transitioned to an on-themarch system and a vehicle system as needed.

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Frequency range 20 - 6000
Channels per band 3
DF method Watson-Watt or 3-channel correlative
RMS accuracy < 5° (using only pure WW)*
Polarisation Vertical
Omni-output Provided as one of the DF channels
Control - RS 485
Switching time < 10µs when using dedicated lines
Integrated features - Compass (accuracy 3°) - Active GPS antenna
Power supply 6 - 10 V DC
Power consumption < 1 W
Electrical Base-mounted connector (see below)
Antenna outputs 3 x co-axial (size 12 contact)
GPS output 1 x co-axial (size 12 contact)
Ext cal input 1 x co-axial (size 12 contact)

    Product Applications

    Signals Intelligence
  • Radio Direction Finding
  • C-ESM