PT. Radio Efkindo    
  Station Name : Trijaya FM Yogyakarta  
  Frequency : 97.00 MHz  
  Address : Jl. Kaliurang KM.6 Pandegarini 2 No. 1 Yogyakarta  
  Phone : 62-274 884663  
  Fax : 62-274 880221  
  Interactive Studio : 62-274 884715  
  Interactive SMS : 081578709700