Transmitter interference

Explanation of question 6

‘Spurious emission’ refers to

  1. a power output greater than that allowed
  2. deliberate ‘out-of-band’ working
  3. a high standing wave ratio
  4. transmission on an additional frequency to that being used

The answer is :- 4 With single sideband transmission, the unwanted sideband is removed by a filter. The remaining sideband will therefore have a bandwidth equal to the bandwidth of the audio frequency, i.e. 3kHz.

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