* This is a DIY product that provides perfect vector network measurement capabilities in the size of a credit card. It includes a 2.8-inch touch screen, TX/RX measurement, can determine the complete S11 and S21 parameters, if you need to get S12 and S22, you need to manually replace the transceiver port wiring. * Simple and practical PC control software, you can export Touchstone (snp) files for various radio design and simulation software through PC software. The metal shield is designed to reduce the external interference and improve the measurement accuracy. * The improved frequency algorithm 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. * Small and portable, easy to use, this project aims to provide an RF gadget but useful instrument for enthusiast. * Package Includes: 1 x NanoVNA host, 1 x USB Type-C data cable, 2 x 30mm SMA male to male cable, 1 x SMA female to female connector.