Ÿ Direction finding of signals with any modulation Ÿ Wide-aperture behaviour above 300 MHz Ÿ Very short signals of 10 ms detectable Ÿ High accuracy and sensitivity Ÿ Bandwidth setting independent of receiver Ÿ AC supply or battery operation Ÿ Simultaneous operation of all DF antennas (HF and VHF/UHF) without replacing antennas Digital Direction Finder R&S DDF195 0.5 MHz to 3 GHz

2 Digital Direction Finder R&S DDF195 Design The Digital Direction Finder R&S DDF195 may comprise the following elements: Ÿ HF DF Antenna R&S ADD119 (0.5 MHz to 30 MHz) Ÿ VHF/UHF DF Antenna R&S ADD195 (20 MHz to 1300 MHz) Ÿ UHF DF Antenna R&S ADD071 (1.3 GHz to 3 GHz) Ÿ DF Processor R&S EBD195 Ÿ Cable Set R&S DDF190Z Moreover, a monitoring receiver with unregulated IF output of 10.7 MHz or 21.4 MHz (e.g. R&S EB200, R&S ESMB or R&S ESMC) is required. Characteristics and operation The Digital Direction Finder R&S DDF195 can be operated in accordance with two DF methods using digital signal processing:...

Digital Direction Finder R&S DDF195 3 (three-digit number), and all values obtained since the activation of this display mode are shown as radial beams indicating the direction of incidence. The lengths of the beams are a measure of frequency occurrence of the bearings. Results can be output as lists. The display mode can also be switched to QDM (heading with reference to magnetic north). In the NORMAL mode, the indication disappears as soon as reception of the DF’d transmitter is over. In the other operating modes, the DF process is terminated by the user. The bearing determined last is stored...

Digital Direction Finder R&S DDF195 4 Antenna accessories If the R&S DDF195 is operated only with the R&S ADD119 in the shortwave range, or with the R&S ADD195/R&S ADD071 in the VHF/UHF range, the connections between the DF Antenna R&S ADD119 and the DF processor are straightforward (Cable Set R&S DDF190Z consisting of one RF cable, one control cable and, if necessary, Power Supply R&S IN061). Where the DF Antennas R&S ADD119 and R&S ADD195 and/or R&S ADD071 are to be used simultaneously, the Connection Board R&S GX190 is needed, since the R&S EBD195 has only one control output and each receiver...

Digital Direction Finder R&S DDF195 5 Specifications DF method Watson-Watt or correlative interferometer Frequency range (depending on receiver/DF antenna) HF 0.5 MHz to 30 MHz VHF/UHF 20 MHz to 1300 MHz UHF 1.3 GHz to 3 GHz Polarization vertical DF accuracy in reflection-free environment1) 2° RMS (0.5 MHz to 30 MHz) 2° RMS (20 MHz to 80 MHz) 1° RMS (80 MHz to 1300 MHz) 2° RMS (1.3 GHz to 3 GHz) Resolution of A/D converter 16 bit Minimum signal duration 10 ms DF sensitivity (5° RMS fluctuation, 5 s averaging time, 1 kHz bandwidth, Rohde&Schwarz receiver) HF 10 ìV/m to 4 ìV/m typ. (frequencydependent,...

ROHDE & SCHWARZ GmbH & Co. KG · Mühldorfstraße 15 · 81671 München · Germany P.O.B. 8014 69 · 81614 München · Germany · Telephone +49 89 4129-0 · Fax +49 89 4129-13247 · www.rohde-schwarz.com General data DF Processor R&S EBD195 Antenna R&S ADD119 Antenna R&S ADD195 Antenna R&S ADD071 Operating temperature range -10°C to +55°C -40°C to +65°C to MIL-STD-810E Meth. 501.3 and 502.3 Storage temperature range -40°C to +70°C -40°C to +85°C to MIL-STD-810E Meth. 501.3 and 502.3 Permissible humidity to DIN IEC68-2-30, max. 95% cyclic, 25°C/55°C Mechanical resistance Vibration, sinusoidal to DIN IEC68-2-6...