The main function of the standard firmware is to measure antenna performance. Rugged and durable, effectively shields electromagnetic interference and ensures measurement accuracy. With an 2.8-inch LCD display, it is a DIY product that provides perfect vector network measurement functions. Small and portable, flexible and convenient operation. Easy to use, this project to provide a small but useful tool for RF enthusiasts. Outer packing size: 150x80x20mm Measurement frequency: 50KHz ~ 900KHz RF output: -13dbm (maximum -9dbm) Measuring range: 70dB (50kHz-300MHz), 60dB (300M-600MHz), 50dB (600M-900MHz) Port SWR: Less than 1.1 Display: 2.8 inch TFT (320 x240) USB interface: USB type-C Communication mode: CDC (serial) Power supply: USB 5V 120mA, built-in 300mAh or 500mAh battery, maximum charging current 0.8A Number of scan points: 101 (fixed) Show Tracking: 4, Markers: 4, Settings Saved: 5 Measure S-parameters, VSWR, phase, delay, chart... PCB size: 54mm x 85.5mm x 11mm (without connectors, switches) Colour:black Material:PCB Package Contents: 1 x Host 1 x USB Data Cable 1 x Type C Data Cable 2 x RF Cable Only the above package content, other products are not included. Note: Light reflection 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.