Which of the following frequency ranges is most suited for meteor-scatter communications?
The correct answer is C: 28 MHz - 148 MHz. Which of the following frequency ranges is most suited for meteor-scatter communications is 28 MHz - 148 MHz. Meteor scatter works best in the VHF range (roughly 28-148 MHz). For amateur radio operators, this is important for meteor scatter operation. Understanding this helps when operating meteor scatter.
Exam Tip
Meteor-scatter frequency range = 28 MHz - 148 MHz. Think 'M'eteor 'S'catter = 'M'iddle 'S'pectrum (VHF). Meteor scatter works best in the VHF range (roughly 28-148 MHz). Not 1.8-1.9 MHz, not 10-14 MHz, not 220-450 MHz - just 28-148 MHz.
Memory Aid
"Meteor-scatter frequency range = 28 MHz - 148 MHz. Think 'M'eteor 'S'catter = 'V'HF range. Meteor scatter works best in the VHF range (roughly 28-148 MHz). Important for meteor scatter operation."
Real-World Application
Meteor-scatter communications: The frequency range most suited is 28 MHz - 148 MHz (VHF range). This includes 10 meters (28-29.7 MHz), 6 meters (50-54 MHz), and 2 meters (144-148 MHz). Meteor scatter works best in this VHF range. This is the range - 28 MHz to 148 MHz.
Key Concepts
Why Other Options Are Wrong
Option A (1.8-1.9 MHz): Incorrect. 1.8-1.9 MHz is too low - meteor scatter works best in VHF range (28-148 MHz). 1.8-1.9 MHz is too low.
Option B (10-14 MHz): Incorrect. 10-14 MHz is too low - meteor scatter works best in VHF range (28-148 MHz). 10-14 MHz is too low.
Option D (220-450 MHz): Incorrect. 220-450 MHz is too high - meteor scatter works best in VHF range (28-148 MHz). 220-450 MHz is too high.
题目解析
The correct answer is C: 28 MHz - 148 MHz. Which of the following frequency ranges is most suited for meteor-scatter communications is 28 MHz - 148 MHz. Meteor scatter works best in the VHF range (roughly 28-148 MHz). For amateur radio operators, this is important for meteor scatter operation. Understanding this helps when operating meteor scatter.
考试技巧
Meteor-scatter frequency range = 28 MHz - 148 MHz. Think 'M'eteor 'S'catter = 'M'iddle 'S'pectrum (VHF). Meteor scatter works best in the VHF range (roughly 28-148 MHz). Not 1.8-1.9 MHz, not 10-14 MHz, not 220-450 MHz - just 28-148 MHz.
记忆口诀
Meteor-scatter frequency range = 28 MHz - 148 MHz. Think 'M'eteor 'S'catter = 'V'HF range. Meteor scatter works best in the VHF range (roughly 28-148 MHz). Important for meteor scatter operation.
实际应用示例
Meteor-scatter communications: The frequency range most suited is 28 MHz - 148 MHz (VHF range). This includes 10 meters (28-29.7 MHz), 6 meters (50-54 MHz), and 2 meters (144-148 MHz). Meteor scatter works best in this VHF range. This is the range - 28 MHz to 148 MHz.
错误选项分析
Option A (1.8-1.9 MHz): Incorrect. 1.8-1.9 MHz is too low - meteor scatter works best in VHF range (28-148 MHz). 1.8-1.9 MHz is too low. Option B (10-14 MHz): Incorrect. 10-14 MHz is too low - meteor scatter works best in VHF range (28-148 MHz). 10-14 MHz is too low. Option D (220-450 MHz): Incorrect. 220-450 MHz is too high - meteor scatter works best in VHF range (28-148 MHz). 220-450 MHz is too high.
知识点
Meteor-scatter communications, Frequency ranges, 28 MHz - 148 MHz, VHF range
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.