Feature: 1. Adopt 1.6mm PCB thick double-sided board, 2.0 oz copper thickness, have a long service time. 2. The full tin spraying process ensures passing performance of large and small currents. 3. A vector network analyzer learner tool that can measure 6.5M ceramic notch filter. 4. Have humanized design, simple operation, easy to install, convenient to use and operate. 5. Small in size and light in weight, convenient to carry and use at any time, very convenient and practical. Specification: Item Type: RF Demo Kit Material: PCB Color: Green Filter: A, Short Low Pass Filter LPF: 30MHz B, High-Pass Filter HPF: 100MHz C, Commonly Used SAW Band Pass Filter BPF: 433MHz D, Video Ceramic Notch Filter BSF: 6.5MHz RLC Series-Parallel Circuit: Including R, L, C and combination circuit Package List: 1 x RF Demo Kit 2 x UFL Connector Line Note: Do not use it outside the specified frequency range.