CRAC Exam 2025 New Question Bank - Memorization and Problem Solving
This annotation is based on the "业余无线电台操作技术能力验证题库 (2025年版)" download package released by CRAC on July 28, 2025, which can be found on their website. Specifically, it uses the "总题库.pdf" file from that package as its primary source.
The goal of this guide is to help with exam preparation, focusing on personal understanding and incorporating techniques learned from other users online. Sometimes, I use mnemonics and Deepseek answers to aid memorization. My knowledge is limited, so please forgive any inaccuracies or lack of rigor.
Due to the default setting of the official question bank, where option A is designated as the correct answer, reading through questions without covering them can easily lead to the formation of ingrained thinking patterns and prevent a true understanding of key concepts. It is recommended to study by covering the questions; alternatively, mix up the order of the answer options or simulate an exam. Focus on memorizing the questions you have made mistakes on, and then use the new question numbers from MC (presumably a standardized test) to find the corresponding questions in this document, as well as similar questions, to aid in memorization. Several amateur radio apps are already available on WeChat that have updated their question banks; users can choose between different types of practice questions and simulated exams based on their needs.
When reading, first start with the basic principles of Ohm's Law for circuits from page 100 onwards, then begin learning equipment terminology to establish a solid theoretical foundation. Then move on to practical topics such as antennas, propagation rules, communication standards, and relevant laws and regulations.
When answering multiple similar questions consecutively, pay attention to the context. Annotations may appear in the middle or at the end of a question, leaving the space blank.
When navigating between multiple pages with similar questions, you may see annotation prompts like "preceded by MC1-1234" and "followed by MC1-1234". Please pay attention to the question number when reading.
The keywords that need to be paid attention to in both the question and answer texts will be highlighted in yellow. When solving problems with incorrect answers using proof by contradiction, there will be no highlighting.
There are questions that include the annotation "official answer is definitive," which, in my understanding, indicates that the official answer may be disputed and potentially not align with common knowledge. However, when answering exam questions, it's still necessary to refer to the official answer as the standard.
The annotations are entered using WPS OFFICE on an Android phone.
If you are reading a PDF locally on your phone or computer, it's recommended to open it with WPS to view the annotations.
If you open a PDF file on QQ or Baidu Cloud, you can also see the annotations.
The total question bank file consists of 332 pages, containing all content from A-class, B-class, and C-class question banks.
The first 100 pages contain information on legal regulations, frequency classifications, and common standards, but these are not yet marked.
The remaining pages (pages 201 onwards) contain technical topics such as circuits, equipment, and antennas, and are mostly completed with annotations.
To facilitate editing, I have divided the complete question bank.pdf file into three separate annotation files based on page ranges (1-99, 100-200, and 200-332).
All question bank from p1 to p99Revision date.pdf (incomplete)
Entire question bank: p100 - p200Revision date.pdf (completed)
Entire question bank from p201 to p332Revision date.pdf (Completed)
Overall question bank figure annotationsRevision date.pdf (completed)
If there are subsequent updates to the documentation, they will be shared on Baidu Netdisk. You only need to download the files with a revised date if it has changed.
73！
BH5UWL
2025-08-30
File format for the new question bank of 2025:
[J] Old question number, typically LK1234. If it's a new question, it will be LX. If an old question is converted to a new one (e.g., changing from single-choice to multiple-choice), the new number will be LY1234.
[P] Unidentified number, purpose unclear.
New question number, typically MC-1234，It's a number with an unclear purpose. Only look at the last four digits.
In the official new question bank archive, the file "Total Question Bank.pdf" contains a total of 1375 questions, with the last question being "MC1-1375". This indicates that all A, B, and C class questions combined add up to 1375.
Based on the statistics of question count obtained from the updated question bank within the WeChat mini program:
Class A, 683
Class B, 1143
Class C, 1282
1375-1282=93
There is a difference of 93 in the number of questions in Class C and the total number of questions. All 93 questions are included in Class A, but only partially included in Class B. The specific question numbers are as follows:
MC-0027MC-0040。14
MC-0052MC-0055。4
MC-0072MC-0100。29
MC-0171MC-0173。3
MC-0259MC-0266。8
MC-0565MC-0591。27
MC-0916MC-0923。8
。
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