U0070. The process for issuing an amateur radio station call sign is:
业余无线电台呼号的核发流程是：
Exam tips · 考试提示
The call sign is issued together with the station license by the radio management authority (A). The service agency does not issue call
signs (B), you do not apply for the call sign separately after the license (C), and you cannot choose your own call sign for the
authority to ratify (D).
U0071. When the radio management authority issues an amateur radio
station license, if the applicant already holds an amateur radio call
sign other than a repeater or beacon call sign, the authority will:
One person gets one general call sign; if you already hold a general
amateur call sign (not a repeater/beacon one), the authority will not issue you another when licensing a new station (A). It will not
replace it (C) or let you choose a new one (B, D).
U0072. When an amateur radio station call sign is discontinued, which of
the following statements is correct? (Choose all that apply.)
业余无线电台呼号停止使用的，下列说法正确的是：
Exam tips · 考试提示
A discontinued call sign must be cancelled (A), and — except for
repeater/beacon call signs — may be re-allocated only after a 1- year holding period (B). Failing to cancel (C) and immediate re-
allocation (D) are both wrong.
U0073. Before a cancelled call sign is re-allocated, if the applicant applies
again to establish and operate an amateur radio station, which of
the following is correct?
注销的电台呼号重新投入分配前，申请人再次申请设置、使用
业余无线电台，下列说法正确的是：
Exam tips · 考试提示
Before a cancelled call sign is re-allocated, a returning applicant
who is granted a license gets their old call sign back (A). The
authority does not issue a new one in this case (B), and cancellation does not bar re-issuance or re-application (C, D wrong).
U0074. When operating (transmitting) on another person's lawfully
established amateur radio station, which of the following is
correct? (Choose all that apply.)
在他人依法设置的业余无线电台上进行发射操作的，下列说法
正确的是：
Exam tips · 考试提示
You may operate another's station and must identify with either the
station's call sign or your own operator call sign (A); if you use your
own, the format must meet domestic/international rules (B). Operating on others' stations is permitted (C, D wrong).
U0075. Which of the following conditions allow the temporary use of
another amateur radio station's call sign? (Choose all that apply.)
满足下列哪些条件，可以临时使用其他业余无线电台呼号？
Exam tips · 考试提示
Temporary use of another call sign is allowed for contests/major
events (A) with national-authority approval through the organizer (B), provided the borrowed call sign complies with international
rules (C). It is not absolutely prohibited (D wrong).
U0076. Which of the following statements about an amateur radio station
call sign is correct? (Choose all that apply.)
关于业余无线电台呼号，下列说法正确的是：
Exam tips · 考试提示
A Chinese call sign has four parts: prefix (A), station type (B), district
number (C), and suffix (D). All four statements correctly describe the structure (e.g., B G 1 XYZ: prefix B, type G, district 1, suffix XYZ).
U0077. Which of the following statements about the amateur radio
station call-sign prefix is correct? (Choose all that apply.)
关于业余无线电台呼号前缀，下列说法正确的是：
Exam tips · 考试提示
China's call-sign prefix is the single letter B, allocated by the ITU (A, B). "BA" and "A" are not China's prefix (C, D wrong).
U0078. Which of the following statements about station type (the second
part of the call sign) is correct? (Choose all that apply.)
关于电台种类（呼号第二部分），下列说法正确的是：
Exam tips · 考试提示
The station-type letter (second part) follows a fixed scheme:
G/H/I/D/A/B/C/E/F/K/L for general stations (A), J for space stations (B), R for repeaters and beacons (C), and S/T/Y/Z plus other
sequences reserved by the national authority (D). All four are correct.
U0079. Which of the following statements about the district number (the
third part of the call sign) is correct? (Choose all that apply.)
关于分区编号（呼号第三部分），下列说法正确的是：
Exam tips · 考试提示
The district number is a single digit indicating the amateur station district (A, B); for space stations the district number is 1 (C). It is not
2 (D wrong).