Design of Two New UHF Tuning Devices

The inception of all-channel TV set production has greatly increased the interest in UHF tuning. The diverging development of small screen portables and large screen consoles indicated the need for two types of UHF tuners. The design of a high performance low cost UHF tuner (U100) is described. Noise figures for the tuner are in the 8-10 db range with image rejections running from 45 to 60 db. The modification of the U100 tuner for use in an outboard converter is described together with the other elements of converter design.