Abstract: Solar observation is the scientific endeavour of studying the Sun and its behaviour and relation to the Earth and the remainder of the Solar System. The life on earth is driven by the sunlight incident form the atmosphere. Therefore climate is critically sensitive to the solar activity. To receive solar radiation data acquisition extended-Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (e-CALLISTO) system was installed. This paper represents the brief review of sunspots, solar flares, solar wind and solar radio burst. Solar radio observations are relevant to such phenomena because they generally originate as events in the solar atmosphere, including flares, coronal mass ejections and shocks, that produce electromagnetic and particle radiations that impact the Earth. Low frequency solar radio emission arises in the solar atmosphere at the levels where these events occurs. We can use frequency as a direct measure of density and an indirect measure of height in the atmosphere. The main radio burst types are described. Solar burst can damage satellites. Very large flares can even create currents within electricity grids and knock out energy supplies.
Keywords: Solar activity, Active region, Sunspots, Solar flare, Solar wind, Solar burst.