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 nevertheless LM386 is active. Then a signal is faded but Pop noize is …
