This new VFO Circuit is a two part (two board) system for the experimenter. The Bottom Board (photo) is the PLL and VFO complete with an area for the experimenter to add whatever circuit he desires such as a transmitter receiver transceiver etc.. The Top Board is a controller with a keypad for frequency entry and an LCD digital readout that displays frequency.

The Top Board controller communicates with the MC145170 chip. Boards may be stacked with spacers and can be mounted in a project box. Not intended to be a complete kit this circuit pair is intended to provide a highly flexible platform for the experimenter student or Ham radio builder etc.