GY/T 225-2007.Technical specifications and methods of meansurement for MW and SW broadcasting transmitters. 5.11.2 整机效率计算 按5.6和5.11. 1的方法同时测量出发射机的输出功率

GY/T 225-2007.Technical specifications and methods of meansurement for MW and SW broadcasting transmitters. 5.11.2 整机效率计算 按5.6和5.11. 1的方法同时测量出发射机的输出功率

GY/T 143-2000.Specifications and methods of measurement on AM optical transmitter and receiver used in CATV systems. 1范围 GY/T 143规定了有线电视系统正向(主)通道残留边带调

GY/T 113-1993. 1.1主题内容 GY/T 113规定了采用微型计算机控制发射机，实现发射台自动化，达到"无人值班、有人留守”的目的;为建立实时控制网、数据传输网及综合管理系统准备条件的功能规范。 1.2适用范围 GY/T 113适用于200kW(含)以下的中波发射台、调频发射台(>

GY/T 169-2001.Technical speci fications and methods of measurement for FM broadcasting transmitters at VHF. 1范围 GY/T 169规定了符合GB/T 4311- -2000《米波调频广播技术

GB/T 13838-1992.Limits and methods of measurement of immunity characteristics to radiated interference for sound and television broadcast receivers an

GB/T 26683-2011.General specification for digital terrestrial set-top box. GB/T 26683规定了支持GB2000--2006地面数字电视接收功能的地面数字电视接收器(以下简称接收器)的功能和性能要求检验规则标志.包装、运

GB/T 6163-2011.Methods of measurement on radio receivers for FM broadcast transmissions. 22.1测量方法 调制频率为98 MHz,頻偏为75 kHz,输入电平70 dBf,输出最大调谐,将音量放置于最大位置。有

GB/T 9384-2011.Environmental testing requirements and methods for broadcasting receivers,broadcasting television receivers , tape recorders and audio

GB/T 28435-2012.Technical specifications and methods of measurement for digital terrestrial television broadcasting transmitters. GB/T 28435规定了符合GB206