Deep Dive: T3B09
The correct answer is D: 300 to 3000 MHz. UHF (Ultra High Frequency) refers to the frequency range from 300 MHz to 3000 MHz (3 GHz). This includes popular amateur bands like 70 centimeters (420-450 MHz), 33 centimeters (902-928 MHz), and 23 centimeters (1240-1300 MHz). UHF frequencies are above VHF (30-300 MHz) and below SHF (Super High Frequency, 3-30 GHz). UHF signals are typically line-of-sight and provide excellent local communications. They're less affected by atmospheric conditions than HF but more affected by obstructions. UHF is commonly used for repeaters, satellite communications, and local simplex operations.
Why Other Answers Are Wrong
Option A: Incorrect. 30-300 kHz is LF (Low Frequency), not UHF. UHF is much higher. Option B: Incorrect. 30-300 MHz is VHF (Very High Frequency), not UHF. UHF starts at 300 MHz. Option C: Incorrect. 300-3000 kHz is in the MF/HF range, not UHF. UHF is 300-3000 MHz.
Exam Tip
UHF = 300-3000 MHz. Remember: UHF (Ultra High Frequency) is 300 MHz to 3000 MHz (3 GHz). This includes 70 cm, 33 cm, and 23 cm bands.
Memory Aid
**U**HF = **3**00-**3**000 **M**Hz (think 'UHF = 300-3000 MHz')
Real-World Example
You're operating on 446.0 MHz, which is in the 70-centimeter band. This frequency is within the UHF range (300-3000 MHz). Your 70-cm radio operates in the UHF spectrum, which provides excellent local communications and is commonly used for repeaters and satellite work.
Source & Coverage
Question Pool: 2022-2026 Question Pool
Subelement: T3B
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 T3B topic.