Statistical Analysis of Pulsations and Pulsations with Fibers in the Range 800-2000 MHz

The July 14, 2000, April 12, 2001, April 15, 2001, July 19, 2001 and September 28, 2001 radio events with fine structures observed by the 800-2000 MHz Ondrejov radiospectrograph (time resolution 0.1 s) are studied. We realized that in the range 800-2000 MHz these events are strong (103 SFU) and that show phenomena with long periodicity >=60 s. Five groups of pulsations alone and ten groups of pulsations together with fibers (observed by the Trieste radiopolarimeter at 1420 MHz with time resolution 1 ms) were studied in detail using linear and nonlinear methods in both L- and R-handed circular polarizations. In these selected intervals we found milisecond quasi-periodic structures and absorptions. The periods, duration, polarization and some other parameters are discussed.