 A 2-metre parabolic wire-mesh antenna was designed to send data from Venus to Earth on a frequency of 922.8 MHz.A 2.4-metre antenna boom was used to transmit short-wave signals during the near-Earth phase of the mission.Semidirectional quadrupole antennas mounted on the solar panels provided routine telemetry and telecommand contact with Earth during the mission, on a circularly-polarized decimetre radio band.