随着有线电视网的建立和完善,电视节目数量大大增加,但一些老彩电却收不到增补频道。通过改换机构高频调谐器(俗称“高频头”)可解决此问题。本文介绍TDQ-1型高频头的代换。 With the establishment and improvement of the cable television network, the number of television programs has greatly increased, but some old TV can not receive additional channels. By changing the agency high-frequency tuner (commonly known as “tuner”) to solve this problem. This article describes the substitution of the TDQ-1 type tuner.