DMB (Digital Multimedia Broadcast) converts various kinds of multimedia signals as voices and images into a digital form and provides services to fixed, portable and automobile wireless receivers. The service provided has high quality of sound and definition broadcasting, comparable even with CDs and DVDs. DMB Gap Filler receives the TDM Ku BAND signal through satellite and restores it as the same quality as the OFDM signal service received from transmit station. It is designed to be used especially in large size buildings as Digital optic / RF distribution repeaters.