A communication system and method for communicating teletext information to mobile stations. In one embodiment, the measurement device includes a sample flow tube, vibration source and detector mounted on the tube, and a measurement module. The fingers are employed to resiliently engage the inner surface of a core of a coil and incorporate a receiver surface for freely abuttable engagement with a stacking tab of a second protector when arranged in mutual stacking relationship. If a voice effect mode is set, a reproduction frequency constant corresponding to the voice effect mode is determined, and based thereon, an inclement value of a read pointer of the ring buffer is determined, and then, the data is read from an address indicated by the read pointer. The introducer can be used for insertion of arms of a urethral sling into a patient.