Simple and practical PC control software, you can export (snp) files for various radio design and simulation software through PC software. The improved frequency algorithm can use the odd harmonic extension of si5351 to support the easurement frequency up to 900MHz.The metal shield is designed to reduce the external interference and improve the measurement accuracy. 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.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 and 400mAh battery, which can be used offline for 2 hours.For longer measurement, please connect external power supply or contact me to make a larger battery version. 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.Specification:Product Name: Vector Network AnalyzerMeasurement frequency: 50KHz ~ 300MHz (50KHz -900MHz, enable extended firmware)RF output: -13dbm (maximum -9dbm)Frequency accuracy: Less than 0.5ppmMeasurement range: 70dB (50kHz-300MHz), 50dB (300M-600MHz), 40dB (600M-900MHz) enable extended firmware)Port SWR: Less than 1.1Display: 2.8 inch TFT (320 x240)USB interface: USB type-CCommunication mode: CDC (serial)Power: USB 5V 120mA, built-in 500mAh battery, maximum charging current 0.8ANumber of calibration points: 101 (fixed)Number of scanning points: 101 (fixed)Display Tracking: 4, Marking: 4, Setting Save: 5Measuring S parameters, voltage standing wave ratio, phase, delay, chart.Material: Plastic + Metalcolour: WhitePackage Contents:1 x NanoVNA host (with 500mAh battery)1 x USB Type-C data cable2 x 30mm SMA male to male RG174 RF cable1 x SMA simple calibration kit1 x SMA female to female connectorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.