In what portion of the 630-meter band are phone emissions permitted?
The correct answer is D: The entire band. In what portion of the 630-meter band are phone emissions permitted is the entire band. Phone emissions are permitted throughout the entire 630-meter band. For amateur radio operators, this is important for 630-meter operation. Understanding this helps ensure legal operation.
Exam Tip
630m band phone emissions = permitted in entire band. Think '6'30m 'P'hone = 'E'ntire 'P'ermitted. Phone emissions are permitted throughout the entire 630-meter band. Not none, not top 3 kHz, not bottom 3 kHz - just entire band.
Memory Aid
"630m band phone emissions = permitted in entire band. Think '6'30m 'P'hone = 'E'ntire 'P'ermitted. Phone emissions are permitted throughout the entire 630-meter band. Important for 630-meter operation."
Real-World Application
The 630-meter band: Phone emissions are permitted in the entire band. Unlike some bands that have restrictions on where phone can be used, 630 meters allows phone throughout the entire band allocation. This is the allocation - phone emissions permitted in the entire band.
FCC Part 97.305Key Concepts
Why Other Options Are Wrong
Option A (None): Incorrect. Phone emissions aren't prohibited - they're permitted in the entire band. None is wrong.
Option B (Only the top 3 kHz): Incorrect. Phone emissions aren't limited to top 3 kHz - they're permitted in the entire band. Top 3 kHz is wrong.
Option C (Only the bottom 3 kHz): Incorrect. Phone emissions aren't limited to bottom 3 kHz - they're permitted in the entire band. Bottom 3 kHz is wrong.
题目解析
The correct answer is D: The entire band. In what portion of the 630-meter band are phone emissions permitted is the entire band. Phone emissions are permitted throughout the entire 630-meter band. For amateur radio operators, this is important for 630-meter operation. Understanding this helps ensure legal operation.
考试技巧
630m band phone emissions = permitted in entire band. Think '6'30m 'P'hone = 'E'ntire 'P'ermitted. Phone emissions are permitted throughout the entire 630-meter band. Not none, not top 3 kHz, not bottom 3 kHz - just entire band.
记忆口诀
630m band phone emissions = permitted in entire band. Think '6'30m 'P'hone = 'E'ntire 'P'ermitted. Phone emissions are permitted throughout the entire 630-meter band. Important for 630-meter operation.
实际应用示例
The 630-meter band: Phone emissions are permitted in the entire band. Unlike some bands that have restrictions on where phone can be used, 630 meters allows phone throughout the entire band allocation. This is the allocation - phone emissions permitted in the entire band.
错误选项分析
Option A (None): Incorrect. Phone emissions aren't prohibited - they're permitted in the entire band. None is wrong. Option B (Only the top 3 kHz): Incorrect. Phone emissions aren't limited to top 3 kHz - they're permitted in the entire band. Top 3 kHz is wrong. Option C (Only the bottom 3 kHz): Incorrect. Phone emissions aren't limited to bottom 3 kHz - they're permitted in the entire band. Bottom 3 kHz is wrong.
知识点
630-meter band, Phone emissions, Entire band, Band allocation
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.