Support measurement range: 70dB (50kHz-300 MHz), (60dB (300M-900MHz), 40dB (0.9G-1.5GHz))>The main function of the standard firmware is to measure antenna performance.>Rugged and durable, effectively shields electromagnetic interference and ensures measurement accuracy.>Small and portable, with an 4-inch LCD display, it is a DIY product that provides perfect vector network measurement functions.>Easy to use, this project to provide a small but useful tool for RF enthusiasts.Measurement frequency: 10KHz ~ 1.5GHz>RF output: 0dbm (2dB, fundamental wave)>Frequency accuracy: Less than 2ppm>Frequency stability: Less than 0.5ppm>Measuring range: 70dB(50kHz-300MHz),(60dB (300M-900MHz), 40dB (0.9G-1.5GHz));>(When using harmonic measurement, it is necessary to pay attention to the error caused by the nonlinear transformation of the fundamental wave)>Port SWR: Less than 1.1>Display: 3.95inch TFT (320 x 480)>USB interface: USB type-C Communication mode: CDC (serial)>Power supply: USB 5V 220mA, built-in 2000mAh battery, maximum charging current 1A>Number of calibration points: 401 (fixed), unlimited when connected to a PC>Number of scan points: 401 (fixed), unlimited when connected to a PC>Scan point speed: 600 p/s(=4000Hz),>Show Tracking: 4, Markers: 8, Settings Saved: 7>Dimensions: 75x 33x18mm (excluding protrusions)>Colour:black>Material:ABS Package Contents:>1 x -H4 host>1 x USB data cable>1 x Type C data cable>2 x SMA male to male RG316 RF cable>1set x SMA calibration kit>1 x SMA female to female connectorOnly 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.