QuestenaПрактика, после которой понятно, что повторить
Вопрос 400

What is one way to produce a single-sideband phone signal?

  1. Use a balanced modulator followed by a filterПравильный ответ
  2. Use a reactance modulator followed by a mixer
  3. Use a loop modulator followed by a mixer
  4. Use a product detector with a DSB signal

Объяснение

The filter method starts with a balanced modulator, which cancels the carrier and leaves both sidebands. A sharp band-pass filter then removes one of them, leaving a single sideband. The alternative is the phasing method, which uses quadrature signals rather than a filter.

Продолжить работу с тестом

Начать тренировку
Вопрос 400: What is one way to produce a single-sideband phone signal? · FCC Amateur Extra Class (Element 4) · Questena