*Question G2A07:
Which of the following statements is true of single sideband (SSB)?*  

*Correct Answer is  B: Only one sideband is transmitted; the other sideband and carrier are suppressed*  

### AI Response: (may contain errors)  

The correct answer to the question about single sideband (SSB) is:

**B: Only one sideband is transmitted; the other sideband and carrier are suppressed.**

### Explanation of the Correct Answer:
- In SSB modulation, only one of the two sidebands (either the upper or lower) is transmitted, while the carrier and the other sideband are suppressed. This results in a more efficient use of power and bandwidth, allowing for clearer communication over long distances.

### Why the Other Choices are Incorrect:
- **A: Only one sideband and the carrier are transmitted; the other sideband is suppressed.**
  - This statement is incorrect because, in SSB, the carrier is not transmitted. Only one sideband is sent, and the other sideband along with the carrier is suppressed.

- **C: SSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands.**
  - This statement is incorrect because other voice modes, such as FM (Frequency Modulation), are also authorized on these bands. SSB is a common mode but not the only one.

- **D: SSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands.**
  - Similar to choice C, this statement is incorrect. While SSB is widely used on these bands, other modes like AM (Amplitude Modulation) and FM are also permitted.

### Useful Rules of Thumb:
- SSB is preferred in amateur radio for voice communication due to its efficiency in power and bandwidth.
- Remember that SSB eliminates the carrier and one sideband, which helps in reducing interference and improving signal clarity.

This understanding of SSB will help you in both the exam and practical applications in amateur radio.