H4 V4.3 10 kHz - 1.5 GHz portable antenna analyzer and vector network analyzer with a 4 inch display for measuring vector networks in HF, VHF and UHF bands. Key upgrades and storage - HW 4.3 introduces a completely new panel and a new SD data port, enabling data storage up to 32 GB (memory cards not included). - 4 inch LCD display provides clear, on site visibility. Power and storage options - Powered by a 1950 mAh battery or via USB for flexible field or bench use. - SD card storage supports logging and saving measurement data for later analysis. Performance and measurement capability - Frequency range up to 1.5 GHz using the odd harmonic extension of the si5351, enabling broader vector network measurements. - Si5351 dynamics: more than 70 dB in the direct output range 50 KHz to 300 MHz, more than 60 dB in the extended range 300 MHz to 900 MHz, and more than 40 dB in the 900 MHz to 1.5 GHz band. - Metallic shielding design reduces external interference and improves measurement accuracy. What it is and how it helps - A compact, portable tool for measuring vector networks, suitable for antenna tuning, RF component testing, and on site diagnostics. Use scenarios - Field antenna tuning and verification during installations or repairs. - On site testing of RF components and matching networks before integration. - Lab bench debugging of VNA measurements for hobbyists or professionals. Specifications at a glance - Model: H4, V4.3 HW 4.3 - Frequency range: 10 kHz to 1.5 GHz - Display: 4 inch LCD - Power: 1950 mAh battery or USB - Storage: SD port, up to 32 GB (cards not included) - Shielding: metallic shielding for reduced interference and improved accuracy Note: memory cards up to 32 GB are not included.