obsolete voltage-gated potassium channel activity involved in Purkinje myocyte action potential repolarization (obsolete GO:0086088)
OBSOLETE. Enables the transmembrane transfer of a potassium ion by a voltage-gated channel through the plasma membrane of a Purkinje myocyte contributing to the repolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.