New Upgrade Shell Design: The NanoVNA-H Vector Network Analyzer added battery circuit management, more secure. Redesigned PCB, you can connect to mobile phone with Type C-Type C cable( original PCB needs OTG cable), see a clear HD image on your phone. Designed a practical and simple control application on PC, you can download touchstone(SNP) files for radio design and simulation software. Added a shell case, which is protective and dust-proof. Improved Frequency Algorithm: the Antenna Analyzer use the improved frequency algorithm which can use the odd harmonic extension of si5351 to support the measurement frequency up to 900MHz. The 50K-300MHz frequency range of the si5351 direct output provides better than 70dB dynamic, The extended 300M-600MHz band provides better than 50dB of dynamics, and the 600M-900M band is better than 40dB of dynamics The HF VHF UHF UV VNA Antenna Analyzer Multiple Functions:The default firmware main function is used for antenna performance measurement. The TX/RX method can measure the complete S11 and S21 parameters. If you need to obtain S12 and S22, you need to manually replace the transceiver port wiring Safe To Use: This VNA is battery powered or USB powered; Built in 400mAh battery, could work for 2 hours continuously, if need extra working time, it can be connected to power bank or power source. Compact And Powerful:Unit with 2.8 inch touch screen,Measuring S parameters, voltage standing wave ratio, phase, delay, Smith chart and the like