Sonic pulsator

From Tardis Wiki, the free Doctor Who reference

Taking off from the Skaro space stations for the Dalek invasion of the solar system, the Red Commander ordered Kangring Squadron to "set sonic pulsators to 75-100, intersecting Jupiter's orbit" then to report when online. (COMIC: Invasion of the Daleks [+]Loading...["Invasion of the Daleks (comic story)"])