nobcha23 https://blog.hatena.ne.jp/nobcha23/ nobcha23のエアバンド受信機自作ブログ DIY airband receiver BLOG https://nobcha23.hatenadiary.com/ R９０９エアバンド受信機 The sensitivity specificattion for VHF AM radios is measured by 10dBSN method. I tried to get the value by using tiny SA ultra, Adruino oscilloscope, and connecting circuit. I described the note how to check the value. WEBの情報を参考に、受信機感度の測定手順についてまとめてみました。手持ちのDIY機器とか部材を利用し、できそうな簡易的な手順をまとめました。(自分でもいくつか間… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnobcha23.hatenadiary.com%2Fentry%2F2024%2F09%2F20%2F235214" title="受信感度10dBSN  To measure 10dBSN sensitivity for DIY radios - nobcha23のエアバンド受信機自作ブログ DIY airband receiver BLOG" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/n/nobcha23/20240920/20240920233733.jpg Hatena Blog https://hatena.blog 2024-09-20 23:52:14 rich https://nobcha23.hatenadiary.com/entry/2024/09/20/235214 1.0 100%