We briefly describe the Pioneer Venus plasma wave instrument and continue with a discussion of wave observations throughout the typical near-noon and near-midnight orbits. This is followed by a detailed comparison of the bow shock turbulence characterisics at earth and at Venus. We then turn to analyze the wave-particle interactions detected near the dayside ionopause, and we show that the whistler mode Laundau damping develops when the B field direction changes so that the whistler becomes oblique.