Direction Finding Antenna System
The DF281B is a tactical, man-portable Direction Finding (DF) antenna system with high sensitivity. The DF281B is used with DRT receivers to locate the source emitters for signals in the 600 MHz to 3000 MHz frequency range. Commutated DF is the standard method for most signals of interest, but this system can also perform Instantaneous DF (IDF) on short-duration signals.
The DF antenna connects to the DRT receiver using coaxial RF and control cabling. The DF281B system includes an external top-mounted ultra-wideband omni antenna, an integrated electronic compass, and an integrated GPS antenna. The system is powered through the DRT receiver. It can be mounted in a variety of ways. The DF281B is weather-resistant for continuous outdoor operation and is water resistant to 1 meter for a period of 30 minutes.