During the last ten years, a large radio telescope has been built in the Netherlands. Known as the Low Frequency Array (LOFAR), this telescope derives its name from its sensitivity to low radio frequencies. Thijs Coenen explores radio observations in radio pulsars. He hereby describes the possibilities offered by LOFAR for radio pulsar observations. Pulsars are variable radio sources as a result of their pulsating signal and the fact that they vary in brightness, sometimes even going out for smaller and longer periods of time.