Deep Dive: E7B07
The correct answer is D: Signal distortion and excessive bandwidth. Which of the following is the likely result of using a Class C amplifier to amplify a single-sideband phone signal is signal distortion and excessive bandwidth. Class C is nonlinear and distorts SSB signals. For amateur radio operators, this is important for amplifier selection. Understanding this helps when selecting amplifiers.
Why Other Answers Are Wrong
Option A: Incorrect. Reduced intermodulation products isn't the result - Class C causes distortion and excessive bandwidth. Reduced IMD isn't the result. Option B: Incorrect. Increased overall intelligibility isn't the result - Class C causes distortion and excessive bandwidth. Increased intelligibility isn't the result. Option C: Incorrect. Reduced third-order intermodulation isn't the result - Class C causes distortion and excessive bandwidth. Reduced third-order IMD isn't the result.
Exam Tip
Class C amplifier with SSB = signal distortion and excessive bandwidth. Think 'C'lass 'C' with 'S'SB = 'C'auses 'S'ignal 'D'istortion. Class C is nonlinear and distorts SSB signals. Not reduced IMD, not increased intelligibility, not reduced third-order IMD - just distortion and excessive bandwidth.
Memory Aid
Class C amplifier with SSB = signal distortion and excessive bandwidth. Think 'C'lass 'C' = 'D'istortion. Class C is nonlinear and distorts SSB signals. Important for amplifier selection.
Real-World Example
Using a Class C amplifier to amplify a single-sideband phone signal: The likely result is signal distortion and excessive bandwidth. Class C amplifiers are nonlinear and don't preserve the SSB signal properly. This is the result - distortion and excessive bandwidth.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E7B
Reference: 2024-2028 Question Pool · E7 - Practical Circuits
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E7B topic.