The Rohde & Schwarz HE400 Handheld Directional Antenna is a modular signal detection and direction-finding system for locating transmitters and interference sources across an extensive frequency range. The platform comprises an antenna handle, cable sets, and interchangeable antenna modules, with polarization control for vertical or horizontal signal reception. Its distinct directional radiation pattern delivers unambiguous measurement results and precise source localization. The system operates in normal mode—with distinct maximum signal pointing forward—and delta mode, which features a steep-edge indent at boresight for faster and more accurate signal identification. Wide dynamic range is achieved through switchable active (LNA on) and passive (LNA off) modes. The lightweight, ergonomic design incorporates trigger and toggle buttons on the handle for direct receiver control, enabling fatigue-free field operation.
Technical Specifications
R&S®HE400BC Basic Handle:
• Frequency range: 8 kHz to 20 GHz
• Impedance: 50 Ω
• VSWR: < 2.0 (typical 1.5)
• Fully passive design; no integrated LNA or external power required
• Automatic antenna module detection and orientation sensing
• Manual compass included
R&S®HE400DC Handle:
• Frequency range: 20 MHz to 20 GHz
• Integrated downconverter extends compatible receiver frequency range to 20 GHz
• Downconverter controlled by connected receiver for continuous operation
R&S®HE400 General Handle:
• Frequency range: 8 kHz to 8 GHz
• Integrated LNA and GPS
– Key Features
• Modular design supports multiple antenna modules for customization
• Normal and delta directional modes for flexible signal source identification
• Switchable active/passive operation for extended dynamic range
• Environmental tolerance for field deployment
• Compatible with R&S®PR200, R&S®PR100, R&S®Spectrum Rider FPH, and R&S®FSH series instruments
– Typical Applications
• Spectrum monitoring and interference hunting
• Mobile network testing
• RF signal intelligence and localization
– Compatibility & Integration
The HE400 connects with Rohde & Schwarz portable receivers and handheld spectrum analyzers, plus third-party RF instruments via standard 50 Ω interface.
