ILLEGAL FREQUENCY USER DETECTION

The officer shows the radio frequency monitoring car at the Race Office Monitor (Balmon) Radio Frequency Spectrum, Kalasan, Sleman, IN Yogyakarta, Friday (24/8). Balmon DIY detects there are still hundreds of frequency users that operate illegally in Yogyakarta Special Region. ANTARA PHOTO/Andreas Fitri Atmoko/aww/18.