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Manpack/Mobile Watson Watt DF Antenna


The DF-A0243 is a wideband DF antenna intended for onthe-move direction finding from 20 to 9000 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 3000 - 9000 MHz
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
Frequency range 20 - 9000 MHz
Control - RS 485
Switching time < 10µs when using dedicated lines
Integrated features - Compass (accuracy 3°) - Active GPS antenna
Stored information Model no.
Power supply 6 - 10 V DC
Power consumption < 1 W
Electrical Base-mounted connector (see below)
Connector MIL-38999/26ZJ24PN

    Product Applications

    Signals Intelligence
  • Radio Direction Finding
  • C-ESM