1Application: The filter attenuator can be matched with NanoVNA F measuring 6.5m/21.3ft ceramic notch filter. PCB filter sensor for VNA. 2Superior Performance: The RF demo kit can be matched with NanoVNA F measurement homemade low pass filter, the 3dB bandwidth is about 400MHz. 3Practical Equipment: RF Demo Kit RF test board demo calibration board for learning vector network analyzer, antenna analyzer test calibration learning. 4High Accuracy: The metal shielding is designed to reduce the external interference and improve the measurement accuracy. 5Safe and Reliable: Each module is well selected of high quality and great reliability. The board is small and light ,sui for carrying with. Item Type: FilterAttenuatorMaterial: PCBDescription:PCB Dmension 10x10cm/ 3.9x3.9in for Learning Vector Network Analyzer, Including:1. RLC Series Parallel Circuit 12. RLC Series Parallel Circuit 23. 33Ohm Resistance, SWR Standing Wave = 1.54. 75Ohm Resistance, SWR Standing Wave = 1.55. BSF Ceramic Filter Element, Central Frequency 6.5mhz6. BPF Ceramic Filter Element, Center Frequency 10.7MHzRC Series Circuit8. LC Series Circuit9. Capacitance10. Inductance11. LPF Homemade Low Pass Filter, 3dB Bandwidth 400MHz12. HPF Homemade High Pass Filter, 3dB Bandwidth 500MHz13. Short Circuit The Calibration Circuit14. Open Circuit Calibration Circuit15. 50ohm Load Calibration Circuit16. Direct Connection17. 10 dB Attenuation Circuit18. 3dB Attenuation Circuit19. Each Group of Functional Circuits 1 x FilterAttenuator2 x Adapter Cable