区县级广播电视发射台700兆频率迁移工程实施经验及本地频道落地方案设计  

Implementation Experience of District-level 700 MHz Frequency Migration Project and Design of Local Channel Landing Scheme

作　　者：卢正强 Lu Zhengqiang(Jimo District Convergence Media Center,Qingdao,Shandong 266200,China)

机构地区：[1]青岛市即墨区融媒体中心,山东266200

出　　处：《广播与电视技术》2025年第4期61-67,共7页Radio & TV Broadcast Engineering

摘　　要：地面数字电视700兆频率的整体迁移是推动广电5G与全国有线电视网络整合一体化发展的基础,该任务涵盖频率规划、设计、实施等多个环节。本文详细探讨地面数字电视区县700兆频率整体迁移工程的规划与实施过程,并以青岛市即墨区发射台为例,分享频率迁移工程的成功经验和模式,包括青岛地区单频网调试、本地米波频道向分米波频道的转换、旧发射机改频作为备机,以及本地频道与中央频道共用天馈系统的合成等实施步骤。The overall migration of the 700 MHz frequency for terrestrial digital television is the foundation for promoting the integrated development of radio and television 5G and the national cable television network integration.It covers multiple aspects such as frequency planning,design,and implementation.This paper elaborates on the planning and implementation process of the overall 700 MHz frequency migration project for terrestrial digital television at the county and district levels.Taking the Jimo District transmitting station as an example,it introduces successful experiences and models.The 700 MHz frequency migration project of the Jimo transmitting station involves implementation steps such as the debugging of the single frequency network in the Qingdao area,the conversion of the local meter wave to the decimeter wave channel,the frequency modification of the old transmitter to be used as a backup machine,and the synthesis and sharing of the local channels and the central channels with the antenna feeder.

关 键 词：700兆频率迁移 单频网 三工器 改频 主备机 

分 类 号：TN934.81[电子电信—信号与信息处理]