彩色电视接收机用频道选择开关总规范
Generic specification for frequency channel selector switches for use in colour television broadcasting receivers
1988-04-08
SJ/T 11120-1997
电视和声音信号的电缆分配系统设备与部件调频立体声和单声道调制器通用规范
Equipment and components used in cabled distribution systems primarily intended for television and sound signals General specification for frequency modulated stereo and monotonic modulators