*Question E7B07:
Which of the following is the likely result of using a Class C amplifier to amplify a single-sideband phone signal?*  

*Correct Answer is  D: Signal distortion and excessive bandwidth*  

### AI Response: (may contain errors)  

Using a Class C amplifier to amplify a single-sideband (SSB) phone signal can lead to specific outcomes due to the nature of Class C operation.

### Correct Answer: D - Signal distortion and excessive bandwidth

1. **Why the correct answer is correct:**
   - Class C amplifiers are designed to operate with a conduction angle of less than 180 degrees, which means they are not linear over the entire input signal cycle. This non-linear operation can introduce distortion to the amplified signal, particularly for complex waveforms like SSB.
   - The distortion results in unwanted harmonics and can lead to excessive bandwidth, as the amplifier may produce signals outside the intended frequency range.

### Why the other choices are incorrect:

2. **A: Reduced intermodulation products**
   - Intermodulation products are typically a result of non-linear amplification. Since Class C amplifiers are non-linear, they are more likely to produce intermodulation distortion rather than reduce it.

3. **B: Increased overall intelligibility**
   - Intelligibility refers to how clearly a signal can be understood. The distortion introduced by a Class C amplifier would likely decrease intelligibility, not increase it, as the signal becomes less clear.

4. **C: Reduced third-order intermodulation**
   - Third-order intermodulation products are also a result of non-linear behavior. Class C amplifiers can actually increase these products due to their non-linear characteristics, rather than reduce them.

### Summary:
- Class C amplifiers are not suitable for amplifying SSB signals due to their non-linear operation, which leads to distortion and excessive bandwidth. Understanding the characteristics of amplifier classes is crucial for effective signal amplification in amateur radio.