Book (Practical) Science and nature Special Radio Operator Problem and Answer Book 2021

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Science and Nature
This is the latest edition of this book, which thoroughly analyzes the past problems of the national examination for each class of Land Special Radio Operators (excluding first class Land Special Radio Operators), each class of Maritime Special Radio Operators, and Aviation Special Radio Operators, and prepares tips and one point advice for obtaining correct answers. It summarizes to the point where you can be sure to pass if you remember this. The qualifications to be covered are second class Land, third class Land, first class Sea, second class Maritime Special Radio Operators, and Aviation Special Radio Operators. In order to operate drones operating in the 5 ghz band, which is increasingly used in recent years, in business, a third class Land Special Radio Operator license is required. In addition, second class Land Special Radio Operator license is required for operation of VSAT for satellite relay of 50W or less, and management of community broadcast stations. Every year, past questions are carefully examined and recorded, and questions and answers from tests conducted up to October 2020 are taken in to achieve a more accurate collection of questions and answers.