From which of the following bands is amateur radio contesting generally excluded?
The correct answer is A: 30 meters. From which of the following bands is amateur radio contesting generally excluded is 30 meters. The 30-meter band is generally excluded from contesting due to its narrow bandwidth and CW/RTTY-only allocation. For amateur radio operators, this is important for contest operation. Understanding this helps when participating in contests.
Exam Tip
Contesting excluded band = 30 meters. Think 'C'ontesting 'E'xcluded = '3'0 meters. The 30-meter band is generally excluded from contesting due to narrow bandwidth and CW/RTTY-only. Not 6m, not 70cm, not 33cm - just 30 meters.
Memory Aid
"Contesting excluded band = 30 meters. Think 'C'ontesting 'E'xcluded = '3'0 meters. The 30-meter band is generally excluded from contesting. Important for contest operation."
Real-World Application
Amateur radio contesting: The 30-meter band is generally excluded from contests. This is because 30 meters has a narrow bandwidth and is allocated for CW and RTTY only, making it unsuitable for most contest activities. Other bands (6m, 70cm, 33cm) are commonly used in contests. This is the band - 30 meters is excluded from contesting.
Key Concepts
Why Other Options Are Wrong
Option B (6 meters): Incorrect. 6 meters isn't excluded - 6 meters is commonly used in contests. 6m isn't excluded.
Option C (70 centimeters): Incorrect. 70 centimeters isn't excluded - 70cm is commonly used in contests. 70cm isn't excluded.
Option D (33 centimeters): Incorrect. 33 centimeters isn't excluded - 33cm is commonly used in contests. 33cm isn't excluded.
题目解析
The correct answer is A: 30 meters. From which of the following bands is amateur radio contesting generally excluded is 30 meters. The 30-meter band is generally excluded from contesting due to its narrow bandwidth and CW/RTTY-only allocation. For amateur radio operators, this is important for contest operation. Understanding this helps when participating in contests.
考试技巧
Contesting excluded band = 30 meters. Think 'C'ontesting 'E'xcluded = '3'0 meters. The 30-meter band is generally excluded from contesting due to narrow bandwidth and CW/RTTY-only. Not 6m, not 70cm, not 33cm - just 30 meters.
记忆口诀
Contesting excluded band = 30 meters. Think 'C'ontesting 'E'xcluded = '3'0 meters. The 30-meter band is generally excluded from contesting. Important for contest operation.
实际应用示例
Amateur radio contesting: The 30-meter band is generally excluded from contests. This is because 30 meters has a narrow bandwidth and is allocated for CW and RTTY only, making it unsuitable for most contest activities. Other bands (6m, 70cm, 33cm) are commonly used in contests. This is the band - 30 meters is excluded from contesting.
错误选项分析
Option B (6 meters): Incorrect. 6 meters isn't excluded - 6 meters is commonly used in contests. 6m isn't excluded. Option C (70 centimeters): Incorrect. 70 centimeters isn't excluded - 70cm is commonly used in contests. 70cm isn't excluded. Option D (33 centimeters): Incorrect. 33 centimeters isn't excluded - 33cm is commonly used in contests. 33cm isn't excluded.
知识点
Amateur radio contesting, 30 meters, Excluded from contesting, Contest bands
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.