PURPOSE: To hardly pick up the electric field radiation noise, by coupling the antenna of low impedance to the long and medium wave reception antenna tuning coil.

CONSTITUTION: The antenna tuning circuit 1 consists of the antenna tuning coil T and the variable capacitance Co connected between the both terminals a and b of the primary winding To, between the intermediate tap c of the primary winding To and the terminal b, the loop antenna 2 having sufficiently lower inductance than that of the tuning circuit 1 or the ferrite bar antenna is connected. The output of the secondary winding T2 is given to the high frequency amplifier 3. The noise radiation from the noise source is considered mainly for the effect on noise electric field, then the lower impedance to the part opposing to the electric field surface of the reception antenna can make reception excellent in S/N.