Deep Dive: T5B02
The correct answer is A: 1500 kHz. 1,500,000 hertz equals 1500 kHz. The prefix 'kilo-' means one thousand, so 1 kHz = 1,000 Hz. To convert hertz to kilohertz, divide by 1,000. 1,500,000 Hz ÷ 1,000 = 1,500 kHz. This is a standard frequency conversion. Kilohertz (kHz) are commonly used for frequencies in the thousands, while megahertz (MHz) are used for frequencies in the millions. 1,500,000 Hz is also equal to 1.5 MHz, but the question asks for the answer in kHz, which is 1500 kHz.
Why Other Answers Are Wrong
Option B: Incorrect. 1500 MHz equals 1,500,000,000 Hz (1.5 billion Hz), not 1,500,000 Hz. You multiplied instead of dividing. Option C: Incorrect. 15 GHz equals 15,000,000,000 Hz (15 billion Hz), way too large. Option D: Incorrect. 150 kHz equals 150,000 Hz, not 1,500,000 Hz. You're off by a factor of 10.
Exam Tip
Hertz to kHz = Divide by 1000. Remember: To convert hertz to kilohertz, divide by 1,000. 1,500,000 Hz ÷ 1000 = 1500 kHz.
Memory Aid
**H**z **T**o **k**Hz = **H**undreds **T**housands (think 'HTk = HT' = Hundreds Thousands, divide by 1000)
Real-World Example
A frequency of 1,500,000 Hz (1.5 million Hz) is commonly expressed as 1500 kHz or 1.5 MHz. Both are correct, but if asked for kHz, the answer is 1500 kHz. This frequency is in the medium wave/AM broadcast range. Understanding these conversions helps when working with different frequency notations.
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.