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


How to improve squelch feeling for Chinese air band receiver kit 中国製エアバンドレシーバーキットのスケルチフィーリング改善

This article is re-edited from the former post. The pop sound is coming out when the squelch is on/off. AGC voltage and squelch volume tuning voltage are compared by LM358 and the circuit is muting RX sound signal at LM386 input neverthele…