Microelectronic package communication is described using radio interfaces connected through wiring. One example includes a system board, an integrated circuit chip, and a package substrate mounted to the system board to carry the integrated circuit chip, the package substrate having conductive connectors to connect the integrated circuit chip to external components. A radio on the package substrate is coupled to the integrated circuit chip to modulate the data onto a carrier and to transmit the modulated data. A radio on the system board receives the transmitted modulated data and demodulates the received data, and a cable interface is coupled to the system board radio to couple the received demodulated data to a cable.