Made of high quality material, practical, has a long service life. Compact and lightweight, easy to use and operate. This is a vector network analyzer learning program. Can be used with NanoVNA-F to measure 6.5M ceramic notch filter. Can be used with NanoVNA-F to make homemade low-pass filters with a bandwidth of 3 dB (approx. 400 MHz). Made of high quality material, practical, easy to use and use, wide range of applications, has a long service life. Features: Made of high quality material, practical, has a long service life. Compact and lightweight, easy to use and use. This is a vector network analyzer learning program. Can be used with NanoVNA-F to measure 6.5M ceramic notch filter. Can be used with NanoVNA-F to make homemade low-pass filters with a bandwidth of 3 dB (approx. 400 MHz). Specifications: Material: PCB Colour: green RLC series and parallel circuit 1 RLC series and parallel circuit 2 33 ohm resistance, SWR = 1.5. 75 ohm resistance, SWR = 1.5. BSF Ceramic Notch Filter, Mid Frequency 6.5MHz BPF ceramic filter, mid frequency 10.7 MHz RC series circuit. LC series connection. condenser inductance Self-built low-pass filter, 3 dB bandwidth 400 MHz Self-built high-pass filter, 3 dB bandwidth 500 MHz Short circuit calibration circuit Idle calibration circle 50 ohm load calibration circuit Straight through 10 dB attenuation circuit. 3 dB damping circuit. Each set of functional circuits. Item size: 100 x 100 mm / 3.9 x 3.9 inches. Product weight: 38 g. Package size: 159 x 152 x 52 mm / 6.3 x 6.0 x 2.0 inches. Package weight: 106g. Package list: 1 x PCB RF tester board. 2 x 200 mm adapter cable