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在生产和修理全频道电视接收机时需要UHF电视信号,本文介绍了将VHF电视信号变换成UHF电视信号的变频器的设计和制作方法。一引言 随着我国广播电视事业的发展,电视发射台日
UHF television signals are required for the production and repair of all-channel television receivers. This article describes the design and fabrication of frequency converters that convert VHF television signals to UHF television signals. I. INTRODUCTION With the development of the radio and television industry in our country, the TV launches the platform