Deep Dive: T5B13
The correct answer is C: 2.425 GHz. 2425 MHz equals 2.425 GHz. To convert megahertz to gigahertz, divide by 1,000. The prefix 'mega-' means one million, and 'giga-' means one billion, so 1,000 MHz = 1 GHz. 2425 MHz ÷ 1,000 = 2.425 GHz. This is a standard frequency conversion. 2.425 GHz is in the microwave/SHF (Super High Frequency) range, commonly used for amateur radio satellite communications and other microwave applications. Understanding these conversions is essential for working with microwave frequencies.
Why Other Answers Are Wrong
Option A: Incorrect. 0.002425 GHz equals 2.425 MHz, not 2425 MHz. You divided by 1,000,000 instead of 1,000. Option B: Incorrect. 24.25 GHz equals 24,250 MHz, not 2425 MHz. You're off by a factor of 10. Option D: Incorrect. 2425 GHz is way too large. You didn't divide at all.
Exam Tip
MHz to GHz = Divide by 1000. Remember: To convert megahertz to gigahertz, divide by 1,000. 2425 MHz ÷ 1000 = 2.425 GHz.
Memory Aid
**M**Hz **T**o **G**Hz = **D**ivide **T**housand (think 'MTG = DTG' = Divide Thousand, ÷ 1000)
Real-World Example
Amateur radio satellite communications often use frequencies around 2.425 GHz (2425 MHz). This is in the microwave range. Understanding that 2425 MHz = 2.425 GHz helps when working with microwave equipment specifications, as they might be labeled in either MHz or GHz.
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.