typical rooftop of belgrade, serbia, with the of television antennas, vhf and uhf frequencies, at the top of a european roo

aerial antenna antennas are belgrade beograd broadcast building bunch communication dark dusk electronic electronics emitter equipment europe european evening frequencies main maintenance media night receive receiver reception receveing repetition roof rooftop serbia serbian shape signal sky srbija systemspicture technological technology telecommunications television terrestrial transmission two typical uhf vhf wave