  Previous searches for radio pulsar wind nebulae (PWN) suggest that only the
youngest and most energetic pulsars power PWN. However the selection effects
associated with such searches are severe, in that emission from a faint compact
PWN will be masked by that from its associated pulsar. This has motivated us to
search for radio PWN using the technique of pulsar gating, which allows us to
``switch off'' the pulsed emission and see what is hidden underneath. This
search has resulted in the detection of the faintest radio PWN yet discovered,
while non-detections around other pulsars have implications for previous claims
of nebular emission and for associations with nearby supernova remnants.
