H4 Vector Network Analyzer with four display functions designed to show measurement results clearly and in real time. Key benefits - Wide frequency coverage: 10 kHz to 1.5 GHz, encompassing MF, HF, VHF and UHF bands for versatile antenna analysis. - Multi purpose: can be used as a Vector Network Analyzer and as an Antenna Analyzer for impedance and resonance checks. - Ready to use: comes with accessories that enhance measurement capability and expand compatibility. - Practical and reliable: suited for a range of antenna related measurements within the specified frequency range. Use scenarios - On site antenna tuning and installation: verify resonance and impedance of antennas across MF to UHF to ensure proper match. - R&D and workshop testing: characterize RF components, cables, connectors, and antennas within 10 kHz to 1.5 GHz. - Field maintenance: perform quick checks of mobile and base station antennas to confirm performance before deployment.