Background information
The original poster passed the Sichuan Province 2025 Fifth B-Class Amateur Radio Operator Technical Proficiency Examination last Sunday, which was the first exam organized by Sichuan Province since implementing the new question bank. After the list of successful candidates was released, members of the group calculated the pass rate, and it was indeed the lowest in history.And so on, a resounding victory for the Party (?).The estimated completion rate is around 64%. Some people may choose to wait and see initially, or they might feel that it's become more difficult and hesitate about whether to register. However, the author chose to register because they were concerned about their existing fees expiring soon, and they didn't want to face the hassle of obtaining a certificate later on, as well as paying for postage. This factor was particularly motivating.
Overview of New B-Class Question Bank Question Types
The new B-level question bank contains over 1100 questions, a significant increase from the original bank's 700+ questions. A complete set of questions consists of 60 questions, with 45 multiple-choice and 15 single-choice questions. To pass, you need to answer 45 multiple-choice questions correctly and 15 single-choice questions correctly. Please note that the new question bank was released by CRAC without distinguishing between single-choice and multiple-choice questions (they are sorted according to the content being tested), so during the exam, both single-choice and multiple-choice questions will be mixed together. You must pay close attention to the labeling of the questions. The content covered includes laws and regulations, frequency ranges, terminology, numerical calculations, unit conversions, equipment usage, component identification, and competition rules. When reviewing the question bank in order, if you are unsure about a particular category of questions, do not dwell on it too much, as each part will have a certain proportion during the actual exam. The category you are concerned about will not dominate.What I dislike most is the frequency allocation.
Personal strategies and platform sharing
The original poster adopted a gradual approach to preparation, spending approximately 50 days from the initial registration to taking the exam. However, this period wasn't characterized by daily practice; instead, practice sessions were typically short, lasting only 15-20 minutes, resulting in a total of around 15 hours of actual practice. This demonstrates that even with an increased number of question banks, it's not necessary to dedicate a significant amount of time to practice.
Allocate more time for preparation; simply focus on understanding the questions.The town's mysterious skill is activated.. I first reviewed the question bank sequentially for the first 25 days, and then practiced with mock exam questions for the next 25 days. With this pace, I could achieve a score of 55/60, but everyone has their own preferred rhythm, so do what feels right for you~
Summary of Class B Knowledge Points You don't need to memorize everything; use it as a reference instead.
BH5HSU - Practice system built by YouTai.
BD8EPN - Practice system built by a friend (original post link)
Collect similar questions and frequently missed questions.
The figure captions are simply for convenience (laughs).
3-turn 6-turn - Mismatch
CQWW-SOAB cannot be used for assistance.
SSTV - 800 Hz
Required bandwidth - CW200
Required bandwidth - FM12.5k
Required bandwidth - RTTY does not support 450, so use 2700.
Required bandwidth - RTTY has 450 options for 450
Transformer advantages - Not achieved
Labeled with rated current - piezoelectric crystal no
And bypass small capacitors - to eliminate
Coreless inductor - reduce
Launch category
Category - GP
Emission category - RF(1)
Emission category - RF(2)
Operating current at launch - 57
Operating current at launch - 91
The operating current during transmission - all are 0.
Law (1)- No fines are imposed.
Law (2)- The maximum fine for fraud is
Law (3)- The remaining 10,000 yuan is also acceptable.
Law (4)- Crime and public safety
Reset button - When When
Receiver SSB-2
Receiver rejects nearby - longest
Receiver rejects long to short ranges.
Receiver rejection of twice-the-frequency - exclusion method
Cross-over - 100HF, 1000 output
Sensitivity - uV to dBm - 0.5 - 113
Sensitivity - uV to dBm - 1 to 107
Sensitivity - uV to dBuV - 0.5 - 0
Sensitivity - uV to dBuV - 1.6
Sensitivity - 1 uV to 2 uV(2)
Sensitivity - 1 uV to 2 uV
Sensitivity exchange - 1 - 113
Sensitivity exchange - 2 - 107
Which one has more power – DC 120V AC Vp120-2?
Which one has more power - DC 120V RMS 120 diode - 2x
Frequency (1)- Going around and around, 50144
Frequency (2)-WARC middle 168
Frequency (3)-15m45 (specific model)
Frequency (4)-10m7 specialized
Frequency (5)-6 m² times
Frequency (6)- LF1357
Frequency (7)- Avoid IARU 14.1
Frequency (8)- Avoid 144
Frequency (9)- ITU 7.0 - 7.2
Average transmit power - FM is significantly lower than CW.
Average transmit power - SSB is approximately(2)
Average transmit power - SSB is approximately
Confirmed
Practicality is key.
SkyTune - Parameter Compensation
Multimeter measures resistance - 0
Multimeter measures square wave voltage - greater than
Multimeter measures impedance - ∞
Xiao Ming was shocked by an electric current - electric relay.
Compact situation
One end resistor - 50
One end short circuit - odd 0 infinity
One end open - odd ∞ 0
Application relay - Not self-made
Application firewalls - Not for
In a free space, two vehicles, A and B, are separated by a distance of 100 km.
Some personal thoughts
The teachers who administer the exams noted that the number of slots available for each exam would continue to decrease, and this could also be seen from the increasing number of questions in the new question bank. This indicates that the barrier to becoming a licensed amateur radio enthusiast is steadily rising.Furthermore, the maximum transmission power in the shortwave band for new B-category licenses has been reduced from the original 100W to 15W, which also indicates that relevant policies may be becoming stricter.So, if you're interested in shortwave radio and find it challenging, don't be discouraged! Just give it a try, and see what happens. Who knows what the future holds?😎
Finally, I wish you all the best in your exam, 73!
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