HRD-737というSDR集積回路をポケッタブルラジオの中に詰め込んだレシーバーをネタに遊んでいます。 I'm trying to remodel China made airborn receiver of HRD-737. I had reported ANT to SMA connector on former artcle. This time I will show you air band ANT made up by try & error style as below. HRD-737の内…