Deep Dive: T5B07
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.
Why Other Answers 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.
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 Example
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.
Source & Coverage
Question Pool: 2022-2026 Question Pool
Subelement: T5B
Reference: FCC Part 97.303
Key Concepts
Verified Content
Question from the official FCC Technician Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the T5B topic.