АПЧ обеспечивает поддержание настройки приёмника в заданных пределах

Makarov: AFC circuit maintains the tuning of a receiver within specified limits, AFC circuit maintains tuning of a receiver within specified limits, AFC maintains the tuning of a receiver within specified limits, AFC maintains tuning of a receiver within specified limits, the AFC circuit maintains the tuning of a receiver within specified limits, the AFC maintains the tuning of a receiver within specified limits