————Two hours from entry to burial

Recently entered HAM by Amway（ [informal] Amateur Radio). In fact, the concept of amateur radio is very broad. In China, except for the 20 409 MHz frequency points of public interphones, the rest are basically primary or secondary services. Here, the words corresponding to amateur (non professional) should be business, which does not mean the operating level of amateur radio operators.

As the saying goes, "Know yourself and your enemy, and you will never be defeated in a hundred wars." As a mainland student, examinations are our "skill". There are 374 questions in the question bank of Class A amateur radio station operation certificate. According to the official information, we can check:

The design of this question bank is based on the characteristics of random selection of questions by the computer, so some adjacent questions are actually the same examination site, but the specific question methods or specific data used are different, so the number of knowledge items that must be mastered is actually less than the number of questions in the overall database. For example, the A-class amateur radio operation certificate test paper involves about 370 questions, but the actual test points are about 250.

In other words, we actually need to remember about 250 knowledge points, And these questions are all single choice questions 。 Looking up the examination syllabus, we can know that the examination site is divided into the following five parts:

• Radio related laws and regulations
• Radio communication procedures and methods
• Principles of radio system
• Security Protection Technology of Amateur Radio Station
• Electromagnetic Compatibility Technology and Prevention and Elimination of Radio Frequency Interference

Laws, regulations and system principles account for the vast majority of the examination content, followed by communication procedures and methods. In addition to the policy questions, the content is basically based on the general knowledge of physics. With the basic knowledge of junior high school physics, you can quickly understand most of the content. I got 18 points when I used the simulation test program without any review. Even if you really can't remember the formula, we can still "fish in troubled waters" by backing options The overall review time is about 2 hours. The author passed the exam with 28 correct results, including a wrong question on the answer card (What a shame) 。 A total of 30 questions were drawn from the exam, and more than 25 correct questions are considered as passed, so it is more than enough to review the exam one night before.

Note: This is not a set of amateur radio textbooks, but an outline for the corresponding exam.

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