徒弟:前面我们介绍了电话机的特殊功能电路、液晶显示拨号电路、录音电话机电路,这一讲请师傅介绍一下无绳电话机的接收单元电路。师傅:无绳电话机是70年问世的一种电话通信终端,它将传通的有绳电话机的机身和手柄分解成主机和副机两部分(即平常所说的固定机与移动机),主机和有线市话网相连,副机在有效通信距离内能进行移动通信,使用非常方便。徒弟:无绳电话机虽然是70年代就问世了,但真正得到广泛应用也只是近几年的事,为了对无绳电话机的生产、进口、销售及使用便于统一管理,使其真正走入正常轨道,听说1985年国家无线电管理委员会对 Apprentice: In front of us introduced the special function of the telephone circuit, LCD dial-up circuit, recording telephone circuit, this master asked about the cordless telephone receiver circuit. Master: A cordless telephone is a telephone communication terminal that has been introduced for 70 years. It divides the body and handle of a wired corded telephone into two parts, the main machine and the auxiliary machine (usually called stationary machines and mobile machines) , The host and the wired local area network is connected, vice plane in the effective communication distance to mobile communications, the use of very convenient. Apprentice: although the cordless telephone was introduced in the 1970s, it has only been widely used in recent years. In order to facilitate the production, import, sale and use of the cordless telephone, it can be put into normal track I heard that in 1985 the National Radio Management Committee right