Which is equal to 3.525 MHz?
The correct answer is C: 3525 kHz. 3.525 MHz equals 3525 kHz. To convert megahertz to kilohertz, multiply by 1,000. The prefix 'mega-' means one million, and 'kilo-' means one thousand, so 1 MHz = 1,000 kHz.
3.525 MHz × 1,000 = 3,525 kHz. This is a standard frequency conversion. Megahertz (MHz) are commonly used for higher frequencies (like amateur radio bands), while kilohertz (kHz) can also be used. 3.525 MHz is in the 80-meter amateur band. Understanding these conversions is essential for frequency calculations and band identification.
Exam Tip
MHz to kHz = Multiply by 1000. Remember: To convert megahertz to kilohertz, multiply by 1,000. 3.525 MHz × 1000 = 3525 kHz.
Memory Aid
"**M**Hz **T**o **k**Hz = **M**ultiply **T**housand (think 'MTk = MT' = Multiply Thousand, × 1000)"
Real-World Application
The 80-meter amateur band includes frequencies around 3.525 MHz. This can also be expressed as 3525 kHz. Both notations are correct, but if asked for kHz, the answer is 3525 kHz. Understanding these conversions helps when working with frequency specifications that might use different units.
FCC Part 97.303Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. 0.003525 kHz is way too small. You divided by 1,000,000 instead of multiplying by 1,000.
Option B: Incorrect. 35.25 kHz equals 0.03525 MHz, not 3.525 MHz. You're off by a factor of 100.
Option D: Incorrect. 3,525,000 kHz equals 3,525 MHz, not 3.525 MHz. You multiplied by 1,000,000 instead of 1,000.
题目解析
The correct answer is C: 3525 kHz. 3.525 MHz equals 3525 kHz. To convert megahertz to kilohertz, multiply by 1,000. The prefix 'mega-' means one million, and 'kilo-' means one thousand, so 1 MHz = 1,000 kHz. 3.525 MHz × 1,000 = 3,525 kHz. This is a standard frequency conversion. Megahertz (MHz) are commonly used for higher frequencies (like amateur radio bands), while kilohertz (kHz) can also be used. 3.525 MHz is in the 80-meter amateur band. Understanding these conversions is essential for frequency calculations and band identification.
考试技巧
MHz to kHz = Multiply by 1000. Remember: To convert megahertz to kilohertz, multiply by 1,000. 3.525 MHz × 1000 = 3525 kHz.
记忆口诀
**M**Hz **T**o **k**Hz = **M**ultiply **T**housand (think 'MTk = MT' = Multiply Thousand, × 1000)
实际应用示例
The 80-meter amateur band includes frequencies around 3.525 MHz. This can also be expressed as 3525 kHz. Both notations are correct, but if asked for kHz, the answer is 3525 kHz. Understanding these conversions helps when working with frequency specifications that might use different units.
错误选项分析
Option A: Incorrect. 0.003525 kHz is way too small. You divided by 1,000,000 instead of multiplying by 1,000. Option B: Incorrect. 35.25 kHz equals 0.03525 MHz, not 3.525 MHz. You're off by a factor of 100. Option D: Incorrect. 3,525,000 kHz equals 3,525 MHz, not 3.525 MHz. You multiplied by 1,000,000 instead of 1,000.
知识点
Frequency conversion, Megahertz, Kilohertz, Unit conversion
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.