Design Considerationd of Printed Circuit VHF TV Tuners

Many TV set manufacturers are considering new chassis designs which use dc controls because of the many advantages offered by that type of system. Perhaps the most important dc control is channel selection. A varactor tuner can be used to make dc tuning possible. The tuner can then be placed anywhere on the TV chassis giving the manufacturer greater flexibility in electrical and mechanical design. In addition, reliability is improved in the absence of mechanical RF switches.