The first radio hams had to probably make their equipment using pieces and components that they little by little obtained according to allowed their budget. Today you can buy equipment in dedicated stores, although still there are radio hams who delight making apparatuses, writing programs for computers, modifying radios and designing and making antennas, in other words experimenting. The "Service of Radio hams", is in fact, the only service in the nation where it is allowed him to the operators with license to make, to modify and to experiment with his equipment. Most of the radio hams is not confronted with the necessity to make equipment since there is a great amount of companies that make and sell designed special equipment for use in the bands of radio hams. That does not mean that there are no good opportunities to design, to make and to modify equipment. An area where the radio hams stand out is the design and construction of antennas. Practically in each technical magazine that it is published there is a variety of articles dedicated to new antennas designed by radio hams. The radio ham experimenter is a constructor whom to him the radio enchants and enjoys causing that the things work, enjoys the challenge and the success to design and to cause that the equipment works
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