GY/T 172-2001.Specification and methods of measurement on MMDS receiving antenna...

行业标准2023.08.01

GY/T 171-2001.Specification and methods of measurement on MMDS transmitter.1范围GY...

行业标准2023.08.01

GY/T 170-2001.Specification of framing structure, channel coding and modulation...

行业标准2023.08.01

GY/T 169-2001.Technical speci fications and methods of measurement for FM broadc...

行业标准2023.08.01

GY/T 33-1984.3.2 屏蔽除非干扰电平低于测量电平20dB,测量工作应在屏蔽的室内进行。屏蔽室对外界各项干扰电平的衰减，均应大于60 dB.3.3电...

行业标准2023.08.01

GY/T 209-2005.Technical specification for broadband video conference based on ti...

行业标准2023.08.01

GY/T 204-2004.Specification of customer service for CATV.GY/T 204规定了有线电视广播网络运营机构...

行业标准2023.08.01

GY/T 208-2005.Radio and TV tower maintenance specifications for power supply,lig...

行业标准2023.08.01

GY/T 82一1989.Methods of field strength measurements for MF and HF broadcasting.G...

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GY/T 100一1990.Long- PIaying Record.4.3.2立体唱片调制纹槽互成90*角的内、外侧槽壁载容各自通道的信号。以相对于唱片表面成...

行业标准2023.08.01