QuestenaПрактика, после которой понятно, что повторить
Вопрос 162

Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception?

  1. 500 Hz
  2. 1000 Hz
  3. 2400 HzПравильный ответ
  4. 5000 Hz

Объяснение

A voice SSB signal occupies roughly 2.4 kHz, so a 2400 Hz filter passes the whole signal while excluding noise outside it. A 500 Hz or 1000 Hz filter would cut away much of the speech, and 5000 Hz would admit about twice the necessary noise.

Продолжить работу с тестом

Начать тренировку
Вопрос 162: Which of the following receiver filter bandwidths provides… · FCC Technician Class (Element 2) · Questena