Abstract: A locking segment presses a slider towards a supporting member so that the slider is fixed to the supporting member. In the present invention, the slider is mechanically pressure-mounted to the supporting member without the use of an adhesive. This reduces the fluctuation of the distance between the slider and the supporting member. Accordingly, when a magnetic head is scanning a recording medium in a floating fashion, the floating distance of the magnetic head can be readily controlled within a predetermined range.

Abstract: A locking segment presses a slider towards a supporting member so that the slider is fixed to the supporting member. In the present invention, the slider is mechanically pressure-mounted to the supporting member without the use of an adhesive. This reduces the fluctuation of the distance between the slider and the supporting member. Accordingly, when a magnetic head is scanning a recording medium in a floating fashion, the floating distance of the magnetic head can be readily controlled within a predetermined range.

Abstract: A switch and an actuator therefore are arranged, respectively, on the portable radio unit and the carrying holder therefore in a manner such that, when the radio unit is inserted in the carrying holder, the switch is actuated to disconnect the microphone-speaker built in the radio unit or left intact, depending upon whether the radio unit is inserted with its grilled face directed backward or forward. With such arrangement, any unwanted increase in power consumption of the speaker circuit of the receiver or noise intrusion to the microphone circuit of the transmitter can be avoided even when an external microphone-speaker is connected to the radio unit. The built-in microphone-speaker can be used even in cases where the radio is carried on a person as at his waist.