Which of the following transmissions is permitted for all amateur stations?
The correct answer is C: Occasional retransmission of weather and propagation forecast information from US government stations. A transmission that is permitted for all amateur stations is occasional retransmission of weather and propagation forecast information from US government stations. This is a specific exception allowing amateurs to relay important government information. For amateur radio operators, this helps provide public service by disseminating weather and propagation information. Understanding this helps ensure legal operation when relaying government information.
Exam Tip
Permitted transmission = occasional weather/propagation retransmission from US government. Think 'W'eather 'R'etransmission = 'W'ithin 'R'ules. Specific exception for relaying government weather and propagation information. Not unidentified tests, not automatic retransmission, not encryption.
Memory Aid
"Permitted = occasional weather/propagation retransmission from US government. Think 'W'eather 'R'etransmission = 'W'ithin 'R'ules. Specific exception for relaying government information. Provides public service."
Real-World Application
You receive a weather forecast from a US government station (like NOAA weather radio) and retransmit it on an amateur frequency to help other operators. This occasional retransmission of government weather and propagation information is specifically permitted. It provides public service by disseminating important information.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Unidentified transmissions are generally prohibited, even for short test purposes. Stations must identify according to regulations.
Option B: Incorrect. Automatic retransmission of other amateur signals is generally not permitted without proper authorization. This could violate third-party rules.
Option D: Incorrect. Encrypted messages are prohibited in amateur radio, regardless of intent. Encryption is not allowed except for specific control purposes.
题目解析
The correct answer is C: Occasional retransmission of weather and propagation forecast information from US government stations. A transmission that is permitted for all amateur stations is occasional retransmission of weather and propagation forecast information from US government stations. This is a specific exception allowing amateurs to relay important government information. For amateur radio operators, this helps provide public service by disseminating weather and propagation information. Understanding this helps ensure legal operation when relaying government information.
考试技巧
Permitted transmission = occasional weather/propagation retransmission from US government. Think 'W'eather 'R'etransmission = 'W'ithin 'R'ules. Specific exception for relaying government weather and propagation information. Not unidentified tests, not automatic retransmission, not encryption.
记忆口诀
Permitted = occasional weather/propagation retransmission from US government. Think 'W'eather 'R'etransmission = 'W'ithin 'R'ules. Specific exception for relaying government information. Provides public service.
实际应用示例
You receive a weather forecast from a US government station (like NOAA weather radio) and retransmit it on an amateur frequency to help other operators. This occasional retransmission of government weather and propagation information is specifically permitted. It provides public service by disseminating important information.
错误选项分析
Option A: Incorrect. Unidentified transmissions are generally prohibited, even for short test purposes. Stations must identify according to regulations. Option B: Incorrect. Automatic retransmission of other amateur signals is generally not permitted without proper authorization. This could violate third-party rules. Option D: Incorrect. Encrypted messages are prohibited in amateur radio, regardless of intent. Encryption is not allowed except for specific control purposes.
知识点
Permitted transmissions, Weather information, Government station retransmission, Public service
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.