  The Saturnian Kilometric Radiation (SKR) is radiated from the auroral regions
surrounding the kronian magnetic poles, above the ionosphere up to a few
planetary radii. It directly compares to the auroral radio emissions emanating
from other planetary magnetospheres such as the Earth and the giant planets.
Our knowledge on SKR relied on remote observations of Voyager (flybys in 1980
and 1981) and Ulysses (distant observations in the 1990s) until Cassini started
to orbit Saturn in 2004. Since then, it has been routinely observed from a
large set of remote locations, but also in situ for the first time at a planet
other than Earth. This article reviews the state of the art of SKR average
remote properties, the first insights brought by in situ passes within its
source region, together with some remaining questions before the Cassini Grand
Finale and its close-in polar orbits.
