  PSR B0943+10 is an old non-recycled pulsar which for decades has been mostly
known for its rapid and spontaneous radio mode switching. Recently, Hermsen et
al. (2013) discovered correlated changes in the thermal X-ray emission from the
polar cap, thus demonstrating that radio modes are not just a product of the
local changes in the radio emission region, but a sign of some global
magnetospheric transformation. At about the same time, owing to the
commissioning of the new generation of low-frequency radio arrays, the
broadband observations at the lowest edge of ionospheric transparency window
became available. At these radio frequencies profile morphology and the
single-pulse properties of PSR B0943+10's emission become very dynamic,
providing details not only about the emission itself, but also about the
conditions in the polar gap. Here, I will present the recent results of the
LOFAR observations of PSR B0943+10 and discuss their contribution to the
multiwavelength picture.
