The PC control software can export Touchstone (snp) files, which can be used for various radio design and simulation software. 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. It has no metal shield. The main advantage is that users with strong hands-on ability can open the machine to view the circuit structure. It is mainly for the study of customers who can DIY, you need to prepare the SMA cable yourself. Small and portable, easy to use. This project aims to provide an RF gadget but useful instrument for enthusiast.