Researches of alpha and beta radioactivity at long-term observations

The part of results obtained on multichannel installation created for researches of various processes, including alpha and beta decays, in a combination to recording of environment parameters, is represented. The installation works more than 13 years practically continuously. At the count rate measurements of the Co-60 and Sr-90 Y-90 beta sources the rhythmic changes with amplitude 0.3 % from average magnitude and period 1 year, and up to 0.02 % with period about one month are detected. Count rate rhythmic changes of alpha sources Pu-239 are not detected. The results obtained by us are compared to similar results of other researchers. The argumentation of critics is analyzed.