nobcha23のエアバンド受信機自作ブログ DIY airband receiver BLOG

エアバンドレシーバーキットの組み立て、改造を手掛けます Assemble and remodel Chinese airband receiver kit

2021-09-23から1日間の記事一覧

Studying R80 circuit diagram PART3 -Mixer &LO  R80回路図の研究 その3 ミキサーと局部発振器

The 1st local oscillator is MS5351 PLL managed by PIC18F1320. There is a rotary encoder to tune the frequency. We can select 100kHz or 10kHz step frequency by pushing the RE knob. The frequency is displayed on the front 7 segments 4 column…