Amateur radio in space

Amateur satellite service is a project sponsered by various entities and carried out by astronauts and cosmonauts on International Space Station who have license. Shuttle Amateur Radio Experiment (SAREX) was its previous name.
Amateur radio operators all over the world speak with astronauts with the help of  their mobile, home radio stations. To establish communication low power radios and small antennas can be used. Even with the help of laptops it is possible to send digital data to space station.
The space station occupants while working have breaks. During break, some of them spend time communicating via amateur radio.
With the help of amateur radio, we can communicate with astronauts in space. This is very useful to students as they get connected with astronauts so that they could learn more new concepts and develop their knowledge.
How to Call Space Station Astronauts on the Radio?
A ground station contains a device capable of both transmitting and receiving radio waves near the 145 megahertz frequency. The ISS radio transmits signals at 145.80 MHz and receives signals at either 144.49 or 145.20 MHz, depending on its orbital location.
During the 10-minute communication sessions, Ransom said, students usually ask the ISS crew what they do in their free time, where they are and what it looks like out their window.
Thus amateur radio in space is very useful and is one among the best methods to communicate with astronauts in space.