PURPOSE: To hand the interstage circuit as a component parts and thus to increase the productivity by forming the interstage consisting of the single or complex tuning circuit provided between the high-frequency circuit and the mixer circuit and thus securing the common use of the same print substrate.

CONSTITUTION: The tuner interstage circuit is provided between high-frequency amplifier circuit 2 connected to input circuit 1 and mixer circuit 4 which supplies the signal of local oscillation circuit 6. And the output of circuit 2 is connected to joint part 8 of the interstage circuit, the input of oscillation circuit 4 is connected to joint part 9 of the interstage circuit, and furthermore earth joint part 10 of the interstage circuit is grounded. The interstage circuit thus formed is changed to interstage circuit block 11a comprising the complex tuning circuit or interstage block 11b composed of the signle tuning circuit, and terminals 12 and 12', 13 and 13' plus 14 and 14' are formed for block 11a or 11b. And block 11a and 11b are secured to be installed to the same print substrate 7, thus facilitating an easy production of the tuner circuit.