Epilogue

　My journey to build a wideband receiver,” which began when I bought an SDR board for uConsole, seems to have come to a conclusion by connecting a 1-yen Android smartphone to RTL-SDR V4 and building my own front end using AI. Going even further back—perhaps around 2013–2014?—it all began when I connected the newly released SDR module to my company-issued Sony Xperia Z. Back then, I even considered embedding the entire frequency database” directly into the device itself. However, since I didn’t know how to program Android smartphones at the time, it remained just an idea.

　Then, by a stroke of luck, I ended up programming an Android smartphone at AI, and that’s how it came together. I’ve changed my mind about the idea of a “Frequency Book” containing everything that I had conceived around that time. TCOの安い、つまり『周波数帳』のメンテはせずにWebと連動させたシステムを作ろうと考えました。If you search online, you’ll find plenty of websites that list these frequencies. It occurred to me that perhaps we could use these frequencies as they are. After some experimentation with uConsole, it evolved into Trinity.

　Intro As I mentioned earlier, since this is based on an Android smartphone, I would be overjoyed if it could make wideband receivers”—which tend to resist change and are often unwelcoming to newcomers—even a little bit more approachable.