BG7MEB Reposted from ON7IR's blog: "Due to the unclear values in the provided schematic, the following clear diagram is from another source, but it is similar. Furthermore, by examining the capacitor markings on the filter, I found that the capacitance values are the same, although the inductance differs slightly. The comparison is shown in the image below. 'Chinese PCB' refers to the model you mentioned, and QST provides the clear schematic."
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