IPRT (Iitate Planetary Radio Telescope) is a large aperture radio telescope developed in 2001 to investigate temporal variations of synchrotron radiation emitted from Jupiter’s radiation belts. Continuous observations of Jupiter’s synchrotron radiation elucidate the acceleration and transport processes of radiation belt. In addition to Jupiter’s synchrotron radiation, IPRT monitors solar radio bursts and conducts pulsar observations. From solar radio burst observations, we aim to understand the radiation environment in the interplanetary medium. Recent project of IPRT includes Very Long Baseline Interferometry (VLBI) observations with the aim of participating in the Square Kilometre Array (SKA).