Ofta has issued a notice earlier to the satellite master antenna television ( smatv ) licensees , class licensees of in - building telecommunications systems , operatorsowners of in - building coaxial cable distribution systems ( ibccds ) ( including communal aerial broadcast distribution ( cabd ) systems , closed circuit television ( cctv ) systems , cable television ( ctv ) systems ) to alert the residents that they might need to adjust their vcrs or other equipments to avoid using channel 35 and 37 as radio - frequency ( rf ) output channel for connection to the television sets 电讯管理局已就此事向本港卫星电视共用天线系统牌照持牌商、楼宇内置电讯系统类别牌照持牌商，以及大厦内同轴电缆系统营办商拥有人(包括共用天线分布系统、闭路电视系统、有线电视系统)发出指引，呼吁有关单位提醒其用户如有需要可调整录影机或其他器材，避免使用频道35及37作为接驳电视机的讯号接收频道。
