CRAC Class A (2025) — Questions 51–60
U0050. The organization responsible for organizing the Class
负责组织C类业余无线电台操作技术能力验证的机构是：
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Class C verification is organized by the 国家无线电管理机构 (national authority) only (A). Provincial authorities (B, C) and local associations (D) may not organize Class C.
U0051. Which of the following statements is correct regarding participating in amateur radio operator-capability verification?
参加业余无线电台操作技术能力验证时，下列说法正确的是：
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Participating in capability verification is free — no examination fee is charged (A). B/C/D (various fees) are prohibited.
U0052. The document certifying amateur radio operator-capability of each class is:
各类业余无线电台操作技术能力证明文件是：
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The capability certificate for each class is the 业余无线电台操作技术 能力验证证书 issued by the radio management authority (A). B/C/D (old CRSA certificates or association letters) are not the current official proof.
U0053. The national radio management authority and its entrusted organizations may organize and implement the following classes of amateur radio operator-capability verification: (Choose all that apply.)
国家无线电管理机构及其委托的机构可以组织实施如下类别的 业余无线电台操作技术能力验证：
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The national authority and its entrusted bodies may organize Class A, B, and C verification (A, B, C). D (Grade-1 personal certificate) is an obsolete old-system category, not part of the current three-class system.
U0054. Into which classes is amateur radio operator-capability divided?
业余无线电台操作技术能力分为哪几类：
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Operator capability is divided into three classes: A类, B类, C类 (A, B, C). There is no D类 in the current system (D is a distractor).
U0055. The main difference between amateur radio stations of different classes lies in: (Choose all that apply.)
不同类别业余无线电台的主要区别在于：
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Different operator-certificate classes (Class A / B / C) differ in the permitted operating frequency range and the maximum transmit power (A, B). Equipment function or antenna height/length are not the defining distinction between classes — a station's class governs where and how strongly you may operate, not what gear or antenna you own.
U0056. The permitted operating frequency range and maximum transmit power for a Class
A类业余无线电台允许工作的频率范围和最大发射功率为：
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A Class A station may operate across the 30–3000 MHz range (i.e., VHF and UHF only) with a maximum transmit power not exceeding 25 W (A). Class A does not include HF (below 30 MHz), and the power cap is 25 W, not 15 W.
U0057. For a person who has obtained the Class
取得B类业余无线电台操作技术能力验证证书的，可以申请设 置、使用业余无线电台的工作频段和最大发射功率为：
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A Class B certificate holder may apply for bands below 30 MHz (HF) at less than 15 W, or bands above 30 MHz (VHF/UHF) at not exceeding 25 W (A). Note that the 100 W HF limit belongs to legacy "grandfathered" B holders (see U0068), not the current Class B certificate scope.
U0058. For a person who has obtained the Class
取得C类业余无线电台操作技术能力验证证书的，可以申请设 置、使用业余无线电台的工作频段和最大发射功率为：
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A Class C certificate holder may apply for bands below 30 MHz (HF) at up to 1000 W, or bands above 30 MHz (VHF/UHF) at up to 25 W (A). The 1000 W HF ceiling is the highest of the three classes; the VHF/UHF cap stays 25 W as for other classes.
U0059. Which of the following requirements must be met to participate in the Class
参加A类业余无线电台操作技术能力验证应当符合下列哪些要 求：
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To sit the Class A verification you must be familiar with the radio management regulations (A) and possess a basic operating- technical capability (B). There is no minimum age of 18 or 16 — minors may also participate, so C and D are wrong.