Research Method This research is qualitative research. Qualitative research provides the

31 until 30 years old, who are aware of global trends and having value as the identity as Indonesia youngsters. It was first aired on February 27, 2000. The mottos of this radio are smart, mature, fun and friendly. It is always updating the information about what is something new in youngsters’ world. The information in the radio provides the listeners with fun information on matters related to music, education, entertainment, career, and health. Source: Profile of Swaragama FM radio The sources of the data were the radio announcers’ utterances that had been collected from September 16 to September 20, 2013. There were five recordings taken from the “Sunset Drive” program because the researcher only got a permission to record the program during that time. The researcher chose five editions of topics discussed in the prog ram because the “Sunset Drive” program is five days daily program and the researcher found the phenomena of code switching during those editions.

C. Research Participants

The participants of this study were two main announcers and two additional announcers. The four announcers lived in Yogyakarta, X1, X2, X3, and X4. Most of the announcers graduated from one of Universities in Yogyakarta. Most of the announcers used Bahasa Indonesia and Bahasa Jawa in their daily communication. When they talked in the radio program, sometimes they switched Bahasa Indonesia into English. They learned English since elementary until University. The announcers were the participant of this study. For supporting the results, the researcher interviewed the participants. The researcher interviewed 32 few of the participants to get their background that caused them to switch languages. Based on the information about their background, the researcher found that they learned English only at school and used Bahasa Indonesia or Bahasa Jawa to communicate. However, during the broadcasting in the radio, they often created switch utterances subconsciously when talking with listeners or other announcers. Interview on July 8, 2014 The principle of this research consisted of recording the transcript of interaction between the radio broadcasters and listeners in various situations during the program. This study, however, only used the code-switching of the subject investigated in five recordings with different topics, for instance graduation, jobseeker, falling in love, Wednesday diary and music. Since the announcers’ utterances in radio program were too broad to be used as a whole, the researcher classified the utterances based on the day of publication and the topics. The announcers’ recordings were presented in Table 3.1. Table 3.1. The Data of the Radio Recordings No The Announcers Date of the recording Topic 1 X1, X2, X4, X3 September 16, 2013 Graduation 2 X1, X2, X3, X4 September 17, 2013 Falling in love 3 X1, X2, X3, X4 September 18, 2013 Wednesday diary 4 X1, X2, X3, X4 September 19, 2013 Jobseeker banking 5 X1,X2,X3, X4 September 20, 2013 Music Notes X1 : Announcer 1 X2 : Announcer 2 X3 : Announcer 3 X4 : Announcer 4