  The reason for the occurrence of different elements of the fine structure of
solar radio bursts in the decimeter and centimeter wavelength ranges has been
determined based on all available data from terrestrial and satellite
observations. In some phenomena, fast pulsations, a zebra structure, fiber
bursts, and spikes have been observed almost simultaneously. Two phenomena have
been selected to show that the pulsations of radio emission are caused by
particles accelerated in the magnetic reconnection region and that the zebra
structure is excited in a source, such as a magnetic trap for fast particles.
The complex combination of unusual fiber bursts, zebra structure, and spikes in
the phenomenon on December 1, 2004, is associated with a single source, a
magnetic island formed after a coronal mass ejection.
