Circuit unit and manufacturing method thereof

The present invention provides a circuit unit with a coaxial connector capable of dealing with various use modes at a low cost and easily ensuring reliability, and a manufacturing method thereof. In a tuner unit, an approximately rectangle-shaped circuit substrate having a core wire installing hole is contained and maintained in a frame which consists of metal plates and has an approximate cuboid shape, the coaxial connector is installed at a periphery part of a through hole which is arranged on a top plate part of the frame. A plurality of clamped holes which are arranged on the circuit substrate and clamped with the frame are configured in a line symmetry way relative to a straight line L. In addition, a plurality of terminal installing holes arranged along one side of the circuit substrate are also configured in a line symmetry way relative to the straight line L. Opening positions of the through holes can be selected properly, and the circuit substrate also can be assembled in the frame in a reversed post