Feature:1. Main Application: Requency test board demo kit is used for learning vector network analyzer VNA, calibration and learning.2. Circuit Resistor And Notch Filter: RLC series parallel circuit 1. RLC series parallel circuit 2. 33 ohm resistor, SWR standing wave=1.5. 75 ohm resistor, SWR standing wave=1.5. BSF ceramic notch filter, center frequency 6.5MHz. BPF ceramic filter, center frequency 10.7MHz.3. Circuit Capacitance Inductance Filter: RC series circuit. LC series circuit. Capacitance. Inductance. LPF self made low pass filter with a 3dB bandwidth of 400MHz. HPF self made high pass filter with a 3dB bandwidth of 500MHz4. Calibration Circuit And Attenuation Circuit: Short circuit calibration circuit. Open circuit calibration circuit. 50 ohm load calibration circuit. Straight through. 10dB attenuation circuit. 3dB attenuation circuit.5. Package List: Package Included 1x RF Tester Board, 2 x 20cm Adapter Cable, providing you great using experience.Specification:Item Type: RF Test BoardProduct Material: PCBWeight: Approx. 49g / 1.7ozAdapter Cable Length: Approx. 20cm / 7.9in.Package List:1x RF Tester Board2 x Adapter Cable