This invention relates to a channel selector provided with a tuning circuit using variable capacitance elements as tuning elements, and has for its primary object the provision of such a channel selector in which bias voltages applied to the variable capacitance elements are preset so that one of these preset bias voltages may be selected by a binary memory circuit and a diode matrix circuit, the selection of the preset voltages disposed in a predetermined sequence may be effected in any desired direction, and one of the bias voltages corresponding to a desired channel may be automatically selected.