Question
What is a characteristic of single sideband (SSB) compared to FM?
Answer Options
- A) SSB signals are easier to tune in correctly
- B) SSB signals are less susceptible to interference
- C) SSB signals have narrower bandwidth
- D) All these choices are correct
Correct Answer: C
Explanation
Single Sideband (SSB) is the most spectrally efficient voice mode. Compared to Frequency Modulation (FM), SSB signals have narrower bandwidth (T8A08 vs T8A09). FM voice signals typically take up 10\text{ kHz} to 15\text{ kHz} of bandwidth, while SSB takes up only about 3\text{ kHz}.
This narrowness is a huge advantage because it allows the limited transmitted power to be concentrated, improving the signal-to-noise ratio in weak signal conditions (T8A03). However, SSB is more sensitive to interference and requires much more careful tuning than FM (T4B06).
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