The board is totally integrated with 18 functional modules. Equipped with 2 pcs of UFL patch cord for convenient use. The board is small and light ,suitable for carrying with. Each module is well of and great reliability. Demo Kit test board demo calibration board for learning Vector Network Analyzer , Antenna Analyzer test calibration learning. Item Type: Demo Kit The filter: Short-wave low-pass filter LPF: 30MHz FM high-pass filter HPF: 100MHz Commonly used SAW bandpass filter BPF: 433MHz Video ceramic trap BSF: 6.5MHz RLC series and parallel circuit Includes R, L, C and combinational circuits Open /short circuit and load calibration circuit The attenuation circuit Note: Installation guide not included, Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:P o Color Material:PCB Package Contents: 1 x Demo Kit Only 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.