Features: The PC control software can export Touchstone (snp) files, which can be used for various radio design and simulation software. The improved frequency algorithm can use the odd harmonic extension of si5351 to support the measurement frequency up to 1.5GHz. The main advantage is that users with strong hands-on ability can open the machine to view the circuit structure. However, when measuring frequencies above 300M, it is easy to be interfered by other signals. So this product is recommended for learning principles and use at lower frequencies. Small and portable, easy to use, this project aims to provide an RF gadget but useful instrument for enthusiast. It is mainly for the study of customers who can DIY, you need to prepare the SMA cable yourself. Specifications: Material: Plastic +Metal Color: Black Measurement Frequency: 50KHz~900MHz RF Output: -13dbm (Maximum -9dbm) Frequency Accuracy: