"Amateur Service: a service of self-training, inter-communication and technical investigations carried on by amateurs that is by duly authorized persons interested in radio technique solely with a personal aim and without pecuniary interest. "

No 78 of the definitions in article  of the Radio Regulations of the International Telecommunication union.

The Amateur Service world-wide, uses or experiments with, virtually every aspect of the art of radio communication from the most simple to the most sophisticated.

It is the urge of the Amateur to experiment and to communicate that is expressed in different countries in different ways. The self-education of individuals or the establishment of classes for those that desire to qualify as radio amateurs provides a basic education for many that would nor otherwise acquire that knowledge.

Whether it is a simple telegraphy transmitter for the novice or the satellite for the advanced amateur, both are learning. The amateur is restricted in the matters that may be the subject of his communication. His common  interest  with all other amateurs in the world is his interest in the radio art and by that  inter-communication knowledge is again exchanged and expanded.

The many aspects of the Amateur Service are illustrated in material separately available, which describes the Service in greater depth and gives examples from different countries of different activities.

The knowledge and experience of communications, and the existence of the equipment that the amateur uses provide a valuable resource that in many countries cannot be found in any other service.

(The above article was published during a WARC conference and extracted the same from an ITU journal)