CRAC Class A (2025) — Questions 261–270

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U0260. Before initiating a call, an amateur station should listen for a while and then ask "is anyone using the frequency?", only calling after confirming no reply. Which of the following English phrases does NOT correctly express this inquiry?

业余电台在发起呼叫前应先守听一段时间，然后再询问“有人 使用频率吗？”，确认没有应答方可发起呼叫。下列英语短句 中不能正确表达这一询问的是：

Exam tips · 考试提示

The question asks which phrase does NOT mean "is the frequency in use?". B/C/D all ask whether anyone is on frequency. "Calling you, Roger?" (A) is a directed call to a specific station, not a frequency-check query — so A is the incorrect one and is marked correct per the key.

U0261. The method for amateur station BH1ZZZ to initiate a CQ call in FM or SSB voice is:

业余电台BH1ZZZ用FM或SSB话音发起CQ呼叫的方法为：

Exam tips · 考试提示

A proper Chinese-voice CQ states "CQ CQ CQ, 这里是BH1ZZZ, [phonetics], BH1ZZZ呼叫CQ, 听到请回答" — exactly option A. B ("please continue") is not a CQ; C truncates the call to "1ZZZ" (incomplete); D ends with "您请讲" (you go ahead) which is not a CQ closing.

U0262. The method for amateur station BH1ZZZ to initiate a CQ call in voice is:

业余电台BH1ZZZ用话音发起CQ呼叫的方法为：

Exam tips · 考试提示

Option A is the standard English-voice CQ: "CQ CQ CQ, this is <call> <phonetics>, <call> calling CQ and standing by." B lacks the call sign; C truncates the call to "One Zulu Zulu Zulu"; D ends with "Back to you" (improper for a general CQ).

U0263. The method for amateur station BH1ZZZ to call BH8YYY in voice is:

业余电台BH1ZZZ用话音呼叫BH8YYY的方法为：

Exam tips · 考试提示

A directed Chinese-voice call repeats the target's call three times, then "这里是BH1ZZZ [phonetics], BH1ZZZ呼叫, 听到请回 答" — exactly option A. B ends with "您继续" (please continue), C truncates the call to "1ZZZ", and D uses an incomplete "8YYY".

U0264. After establishing voice communication, operator Xiaoming wants to give the other station BH1ZZZ a signal report of "57". He can say:

建立话音通信后，操作员小明打算给对方电台BH1ZZZ“57” 的信号报告。他可以这样讲：

Exam tips · 考试提示

A signal report is given by naming the station and stating its signal: "BH1ZZZ, 你的信号57" then confirming copy (A). B asks permission oddly; C gives the number without naming the station; D uses "this is BH1ZZZ" which would falsely claim to be the other station. Only A is correct.

U0265. After establishing voice communication, Xiaoming wants to say he is operating from Chengdu. He can say:

建立话音通信后，小明打算介绍自己是在成都操作的。他可以 这样讲：

Exam tips · 考试提示

QTH means "my location", so "我的QTH是成都" (My QTH is Chengdu) is the correct way to state operating location (A). QRT = shutting down (B), QRO = increasing power (C), QRV = I am ready / equipped (D) — none mean "located at".

U0266. When listening to SSB contacts between amateur radio operators, we sometimes hear short phrases like "Cheerio.", "Ciao ciao.", or "Do svidaniya." Their meaning is:

收听业余无线电爱好者的SSB通联时，我们有时会听到 “Cheerio.”、“Ciao ciao.”或“Do svidaniya.”一类的短 句。其含义是：

Exam tips · 考试提示

"Cheerio" (British English), "Ciao ciao" (Italian), and "Do svidaniya" (Russian) are all friendly farewells. On the air they express mutual good wishes and goodbye between operators of different regions (A). B/C/D only describe the linguistic nature, not the communicative meaning. Q 简语与常用缩语 Q-Codes and Common Abbreviations

U0267. During QRP operation, if the other station reports your signal is weak, you might ask whether you should increase power. You can send:

QRP操作时如果对方反映信号不好，我们可能会追问是否需要 增加功率。此时可发送：

Exam tips · 考试提示

QRO means "shall I increase power?" / "I am increasing power." Asking whether to raise power uses QRO? (A). QSO = a contact; QRP = reduce power / low-power operation; QRS = send slower. So only A fits "increase power".

U0268. During a contact, if you believe QRP operation is enough to ensure reliable communication, you can negotiate with the other station to lower power. The phrase is:

通联时，如认为QRP操作足以保证可靠联络，则可与对方协商 降低功率。短句为：

Exam tips · 考试提示

QRP means "shall I reduce power?" / "I am reducing power." Proposing to lower power uses QRP? (A). QRO = increase; QRU = I have nothing for you; QRT = I am closing down. So only A means "reduce power".

U0269. When amateur stations conduct communication research or chase awards at power below 5 W, they often append the operating attribute "QRP" to the call sign, e.g., BI9XYZ/QRP. The Q-code "QRP" means:

业余电台以低于5瓦的功率开展通信研究或追逐奖状时，常在呼 号之后附加操作属性“QRP”。例如：BI9XYZ/QRP。Q简语 “QRP”表示：

Exam tips · 考试提示

QRP means "I am reducing / have reduced transmitter power" (typically low-power operation, generally ≤5 W). Option A captures the meaning. B over-specifies "to 5 W" (QRP is the state of reduced power, not a fixed number); C (send slower) is QRS; D is a distortion.