The Rohde & Schwarz DDF550 Wideband Direction Finder is a signal localization instrument engineered for precise bearing acquisition across 8 kHz to 6 GHz. It delivers direction finding accuracy from 0.2° to 1° RMS depending on antenna selection and frequency band, with sensitivity as low as 0.7 µV/m. Real-time processing bandwidth reaches 80 MHz, and DF scan speed spans 5 to 40 GHz/s, enabling rapid intercept of frequency-agile and short-duration signals.
Technical Specifications
• Frequency Range: 8 kHz to 6 GHz
• Real-time Bandwidth: 80 MHz
• DF Scan Speed: 5 to 40 GHz/s
• DF Accuracy: 0.2° to 1° RMS (varies by antenna: ≤ 2° RMS for 1 MHz–30 MHz; ≤ 1° RMS typical 0.5° RMS for 20 MHz–1.3 GHz; ≤ 2° RMS typical 1° RMS for 1.3–3 GHz)
• DF Sensitivity: 0.7 to 3 µV/m
• Power Supply: AC or DC models available
– Key Features
• Multichannel parallel output exceeding 100 channels with real-time signal detection and analysis
• Adjustable coherent signal integration in wideband DF and DF scan modes for sensitivity enhancement
• Multichannel digital downconversion (DDC) signal extraction with optional pre-classifier for LPI signal detection
• Automatic detection of fixed frequency, burst, and frequency-agile short-time signals
• High reflection immunity via DF antennas with large element counts
• Active/passive switchable antenna operation
• GPS-based synchronization for multi-unit networked DF scan arrays
• Optional ITU-compliant measurement methods available
– Typical Applications
• Spectrum monitoring and interference hunting
• Signal intelligence and security operations
• Field deployment via mobile platform integration
– Connectivity & Compatibility
• Interfaces: USB, Ethernet, GPIB
• Compatible with all R&S®ADDx multichannel DF antenna systems
• Integrated lightning protection with extendible antenna capabilities
• Software options include R&S®DDF550DDCE and R&S®CA120FFP for DDC extraction; R&S®DDF550-HRP and R&S®CA120DSC for signal detection
