Recently,A new all mode HF DIY transceiver KN990 made by BA6BF is published, KN990 has many new features, especially Real time spectrum and IF DSP。 As a surprise,this transceiver provide 2 video games!  It maybe the best video game station in amateur kits, or the best amateur kit in video games。     Here‘s abstract information:    Real time spectrum is very useful for finding signals in the .. 阅读更多