UDC621.396.74M65中华人民共和国国家标准GB/T14435.2-93卫星广播业务和地面业务间的频率共用620790MHz卫星广播业务（电视）和地面广播业务（电视）间的频率共用Frequency sharing between the broadcasting-satelliteservice and terrestrial services-Frequency sharingbetween the broadcasting-satellite service(television)and terrestrial broadcasting services(television)in frequency band 620790 MHz1993-06-09发布1993-12-01实施国家技术监督局发布
