SPREADER.--A stick of wood, or spar, that holds the wires of the aerial apart.
STAGGER WOUND COILS.--See Coils, Inductance.
STAND-BY CIRCUITS.--See Circuits, Stand-By.
STATIC.--Also called atmospherics, grinders, strays, X's, and, when bad enough, by other names. It is an electrical disturbance in the atmosphere which makes noises in the telephone receiver.
STATOR.--The fixed or stationary coil of a variometer or a variocoupler.
STORAGE BATTERY.--See Battery, Storage.
STRAY ELIMINATION.--A method for increasing the strength of the signals as against the strength of the strays. See Static.
STRAYS.--See Static.
STRANDED WIRE.--See Wire, Stranded.
SUPER-HETERODYNE RECEPTOR.--See Heterodyne, Super.