Question
Which of the following statements is true of single sideband (SSB)?
Answer Options
- A) Only one sideband and the carrier are transmitted; the other sideband is suppressed
- B) Only one sideband is transmitted; the other sideband and carrier are suppressed
- C) SSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands
- D) SSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands
Correct Answer: B
Explanation
The defining characteristic of Single Sideband (SSB) transmission is its efficiency, which is achieved by only transmitting the information contained within one sideband. In a fully suppressed-carrier SSB signal, the entire carrier wave and the other, redundant sideband are filtered or cancelled out.
This results in a transmission that uses maximum power to convey the voice information in the minimum possible bandwidth. This process is distinct from Amplitude Modulation (AM), which transmits both sidebands and the carrier, making SSB significantly more efficient for long-distance communication.
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