DFS-A0245 is a huge-range four-band direction finding antenna for tactical DF from 1 to 6000 MHz. Internal electronics provide digital compass output, band switching and internal noise source for calibration. A GPS antenna is also inside.
The upper antenna array, under radome, is implemented as a three-band vertical stack with each antenna band utilizing Adcock array principles. A fourth band is nestled in the quadpod. Low frequency performance is enhanced with patented hybrid loop-Adcock technology in Bands A and B to provide improved sensitivity over traditional dipole designs of the same form factor. Each band offers an omnidirectional output that can also be used for monitoring.
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. A compass and active GPS antenna are also integrated.