Which frequency is in the 6 meter amateur band?
The correct answer is B: 52.525 MHz. This frequency is in the 6-meter amateur band, which extends from 50.0 to 54.0 MHz. The 6-meter band is often called the 'magic band' because of its unique propagation characteristics that can provide both local and long-distance communications.
The 6-meter band (50-54 MHz) is a VHF band that exhibits unusual propagation during certain conditions, sometimes allowing contacts over thousands of miles. Frequency 52.525 MHz is commonly used for FM repeater operations and simplex communications on 6 meters. This band is particularly popular during sporadic-E propagation events, when signals can bounce off ionized patches in the E-layer of the ionosphere, enabling contacts far beyond normal VHF range.
Exam Tip
6 meters = 50-54 MHz. Remember: '50 to 54' is the 6-meter band. 52.525 MHz falls right in the middle of this range.
Memory Aid
"**6** meters = **5**0 to **5**4 MHz (think '6 = 50-54')"
Real-World Application
You're operating on 6 meters during a sporadic-E opening. You tune to 52.525 MHz and call CQ. A station in Texas answers your call from your location in Ohio - over 1,000 miles away on VHF! This is the 'magic' of 6 meters, where VHF signals can sometimes travel much farther than normal due to unusual propagation conditions.
FCC Part 97.305Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. 49.00 MHz is below the 6-meter amateur band, which starts at 50.0 MHz. This frequency is in a different radio service.
Option C: Incorrect. 28.50 MHz is in the 10-meter band (28.000-29.700 MHz), not the 6-meter band.
Option D: Incorrect. 222.15 MHz is in the 1.25-meter band (222-225 MHz), not the 6-meter band.
题目解析
The correct answer is B: 52.525 MHz. This frequency is in the 6-meter amateur band, which extends from 50.0 to 54.0 MHz. The 6-meter band is often called the 'magic band' because of its unique propagation characteristics that can provide both local and long-distance communications. The 6-meter band (50-54 MHz) is a VHF band that exhibits unusual propagation during certain conditions, sometimes allowing contacts over thousands of miles. Frequency 52.525 MHz is commonly used for FM repeater operations and simplex communications on 6 meters. This band is particularly popular during sporadic-E propagation events, when signals can bounce off ionized patches in the E-layer of the ionosphere, enabling contacts far beyond normal VHF range.
考试技巧
6 meters = 50-54 MHz. Remember: '50 to 54' is the 6-meter band. 52.525 MHz falls right in the middle of this range.
记忆口诀
**6** meters = **5**0 to **5**4 MHz (think '6 = 50-54')
实际应用示例
You're operating on 6 meters during a sporadic-E opening. You tune to 52.525 MHz and call CQ. A station in Texas answers your call from your location in Ohio - over 1,000 miles away on VHF! This is the 'magic' of 6 meters, where VHF signals can sometimes travel much farther than normal due to unusual propagation conditions.
错误选项分析
Option A: Incorrect. 49.00 MHz is below the 6-meter amateur band, which starts at 50.0 MHz. This frequency is in a different radio service. Option C: Incorrect. 28.50 MHz is in the 10-meter band (28.000-29.700 MHz), not the 6-meter band. Option D: Incorrect. 222.15 MHz is in the 1.25-meter band (222-225 MHz), not the 6-meter band.
知识点
6-meter band, 50-54 MHz, VHF amateur band, Sporadic-E propagation
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.