group box communication installed on galvanized roof tower telephone pole wireless technology

electricity mast iron machine vehicle line lighting tower wind industry blue streetlight transport fence aerial antenna background broadcast broadcasting business cables cell cellular city communication connection construction equipment frequency global high industrial information internet link metal mobile network outdoors outside phone pylon radio satellite signal sky station steel structure technology telecom telecommunication telephone town transmission transmit transmitter white wireless group box installed galvanized roof pole future electric wire tangle antennas mounted