April 21 , 2024
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	- The day is dedicated to promoting the use of amateur radio and to enhance its spectrum privileges. 
- Amateur radio is the first type of wireless communication that uses short-wave radio waves. 
- This was first instituted by radio amateurs in 1925.
- On 18 April 1925, International Amateur Radio Union (IARU) was established in Paris.

                                 
                            
                                
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