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Вопрос 157

What does the scanning function of an FM transceiver do?

  1. Checks incoming signal deviation
  2. Prevents interference to nearby repeaters
  3. Tunes through a range of frequencies to check for activityПравильный ответ
  4. Tunes through a range of frequencies to determine the antenna’s resonant frequency

Объяснение

Scanning steps the receiver automatically through a range of frequencies or a set of memory channels and stops when it finds a signal, so the operator can find activity without tuning by hand. It does not measure deviation or antenna resonance.

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Вопрос 157: What does the scanning function of an FM transceiver do? · FCC Technician Class (Element 2) · Questena