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Pregunta 452

What is the approximate ratio of PEP-to-average power in an unprocessed single-sideband phone signal?

  1. 2.5 to 1Respuesta correcta
  2. 25 to 1
  3. 1 to 1
  4. 13 to 1

Explicación

Speech is a highly peaky waveform: brief vowel peaks drive the transmitter to full output while the average over a syllable is much lower, so an unprocessed single-sideband signal averages roughly 2.5 times below its peak envelope power. Speech processing raises the average and lowers the ratio; the other figures are far outside anything voice waveforms produce.

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Pregunta 452: What is the approximate ratio of PEP-to-average power in an… · FCC Amateur Extra Class (Element 4) · Questena