Ключевые слова: antenna, antennas, broadcast, broadcasting, bulgaria, cell, communication, digital, hub, industrial, information, listening, media, mobile, net, network, nobody, outdoor, parabolic, phone, pylon, radio, receive, repeat, repeater, satellite communicate, signal, sky, sonair, stream, streaming, technology, telecom, telecommunication, television, tower, transmission, transmit, transmitter, transmitting, wave, wireless,