4in Display Portable Vector Network Analyzer Kit VNA Measurement Tool 10KHz‑1.5GHz Condition: Item Type: Vector Network Analyzer Material: Aluminum+PCB Measurement Frequency: 10KHz-1.5GHz RF Output: 0dbm (±2dB, Fundamental Waves) Frequency Accuracy: <2ppm Frequency Stability: <0.5ppm Measurement Range: 70dB (50kHz-300MHz), (60dB (300M-900MHz), 40dB (0.9G-1.5GHz) enable extended firmware);(When using harmonic measurement, you need to pay attention to the error caused by the nonlinear transform of the fundamental waves) Port SWR: <1.1 Display: 4in USB Interface: USB type-C Communication Mode: CDC (serial) Power Supply: USB 5V 200mA, built-in 1950mAh battery, maximum charging current 1A Number of Calibration Points: 101 (fixed) Number of Scanning Points: 101 (fixed) Display Tracking: 4, Marking: 4, Save Settings: 5