Key Features
Real-time Analysis
Live signal visualization and FFT analysis with professional-grade accuracy
Multiple Views
Waterfall, 2D, and 3D visualization modes for comprehensive signal analysis
Multi-Device Support
Support for unlimited RTL-SDR devices with automatic detection and management
Smart Device Management
Automatic detection of available devices and intelligent busy-device skipping
Advanced Controls
Precise frequency selection and customizable sampling rates
Real-time Updates
Continuous signal monitoring with minimal latency
Setup Guide
1. Connect Your Devices
- Connect your RTL-SDR dongles to USB ports
- Wait for Windows to recognize the devices
- Multiple devices can be connected simultaneously
2. Launch the Software
- Run Khanfar Spectrum Analyzer
- The software will automatically detect available devices
- Select your preferred device from the list
- Busy devices will be automatically skipped
Technical Specifications
Hardware Support
- All RTL-SDR devices (RTL2832U)
- Multiple device simultaneous operation
- Automatic device detection and management
- Smart busy-device handling
Signal Analysis
- Real-time FFT processing
- Configurable sample rates
- Multiple visualization modes
- Advanced filtering options
Performance
- Low-latency processing
- Efficient resource usage
- Optimized multi-device handling
- Real-time updates
Gallery
System Requirements
Hardware
- RTL-SDR USB dongle(s)
- USB 2.0 or higher ports
- 2GB RAM minimum
- Dual-core processor or better
Software
- Windows 10/11
- Zadig USB driver utility
- WinUSB driver
- .NET Framework 4.7.2 or higher
Khanfar Spectrum Analyzer
Professional SDR Analyzer
Our flagship software for comprehensive signal analysis with multi-device support and advanced visualization capabilities.
- Real-time FFT and waterfall displays
- Multi-device support with auto-detection
- 2D and 3D visualization modes
- Precise frequency tuning and sampling
- Smart device management
- Low-latency processing
Version 1.0.0
Unzip Password: 1234
Click to watch the tutorial on YouTube
Additional Software
Explore our collection of specialized SDR tools designed for specific signal processing tasks
Khanfar RTL Sweeper
A powerful spectrum analyzer for RTL-SDR devices with real-time FFT analysis capabilities.
- Multi-device support with automatic detection
- Real-time FFT spectrum analysis
- Adjustable frequency range and gain
- Visual spectrum display with sweep line
- Customizable sweep speed and bin size
- User-friendly interface with preset spans
Unzip Password: 1234
Khanfar Advanced Spectrum Analyzer
A comprehensive spectrum analysis tool for advanced signal monitoring and analysis.
- Advanced signal processing algorithms
- Multiple visualization modes
- Real-time frequency analysis
- Customizable display settings
- Signal strength monitoring
- Frequency band scanning
Khanfar-FM Radio
Professional FM radio receiver with advanced signal processing and station management capabilities.
- Wide FM (WFM) and Narrow FM (NFM) demodulation
- Full frequency coverage (24 MHz - 1766 MHz) for NFM
- Commercial FM band coverage (87.5-108 MHz) for WFM
- Smart station scanning and bookmarking
- Real-time signal strength meter
- High-quality audio output (44.1 kHz)
- Advanced de-emphasis filtering
- Multiple sample rate presets (250 kHz - 2.4 MHz)
- Flexible gain control (0-49.6 dB)
Unzip Password: 1234
Khanfar Direction Finder
Professional radio direction finding system with quad-SDR triangulation and real-time bearing calculation.
- 4x RTL-SDR simultaneous operation
- Real-time signal power measurement (4096 samples/reading)
- Adaptive threshold-based alarms (visual/audio)
- Polar plot & compass visualization
- Frequency range: 24MHz - 1.766GHz
- 28-step gain control (0-49.6 dB)
Technical Specifications:
- Sample Rate: 2.4 MS/s
- Bandwidth: 1.2 MHz
- Update Interval: 50-200ms
- FFT Size: 4096 points
- Supported Hardware: RTL2832U-based SDRs
Antenna Systems
Log-Periodic Dipole Arrays (LPDAs)
The Swiss Army knife of DF antennas! These wideband beasts cover 100 MHz to 2 GHz with 8+ dBi gain. Precision-tuned elements ensure phase coherence across all 4 SDRs.
- Frequency Range
- 100 MHz - 2 GHz
- Gain
- 8-12 dBi
- Beamwidth
- 60°-90°
- Front-to-Back Ratio
- 15-20 dB
Setup Configuration:
- Align 4 LPDAs at 90° intervals (N/S/E/W)
- Use identical 50Ω coaxial cables
- Software configuration:
- Set bandwidth to 144-148 MHz for narrowband operation
- Enable phase correlation analysis
Yagi-Uda Antennas
- Gain
- 15 dBi
- Beamwidth
- 30°
- Frequency Range
- Single-band optimized
Operational Tips:
- Mount on motorized rotators for bearing refinement
- Enable threshold alarms for weak signals
- Use with LNA for distant targets
Helical Antennas
- Beamwidth
- 70°
- Frequency Range
- 400-1700 MHz
- Applications
- GPS, 915 MHz ISM, 1.2 GHz FPV
Deployment Notes:
- Ideal for mobile tracking applications
- Use circular polarization for multipath rejection
- Pair with LNA for satellite tracking
Narrowband DF Optimization:
- Tune LPDAs to specific frequency band (e.g., 144-148 MHz)
- Use logarithmic element scaling for consistent performance
- Monitor phase coherence between array elements
Unzip Password: 1234
Click to watch the tutorial on YouTube
Khanfar Direction Finder QUINTET Version
Enhanced radio direction finding system with quad-SDR plus central SDR omnidirectional antenna for superior triangulation and signal analysis.
- Central SDR Integration: Added a fifth SDR for improved triangulation and analysis
- Interactive Map View: Visualize signals on a map with offline tile caching
- Triangulation Mode: Determine signal source Direction using advanced triangulation
- Configuration Management: Save and load settings automatically
- Enhanced User Interface: Scrollable control panel and improved layout
- Advanced Signal Processing: Dynamic signal distance calculation and improved reconnect logic
Additional Features:
- Offline Map Support: Cache map tiles for offline use
- Additional Controls: Latitude/longitude input and max signal distance setting
- Error Handling and Logging: Improved diagnostics and error recovery
- Visual Enhancements: Updated heatmap colors and compass design
- Performance Improvements: Optimized update intervals and thread management
