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سؤال 155

How is squelch adjusted so that a weak FM signal can be heard?

  1. Set the squelch threshold so that receiver output audio is on all the timeپاسخ درست
  2. Turn up the audio level until it overcomes the squelch threshold
  3. Turn on the anti-squelch function
  4. Enable squelch enhancement

توضیح

Squelch mutes the receiver until the signal exceeds a set threshold, so a weak signal below that threshold is silenced. Backing the threshold off until the receiver noise is heard continuously means nothing is being muted, so even weak signals get through.

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شروع تمرین
سؤال 155: How is squelch adjusted so that a weak FM signal can be… · FCC Technician Class (Element 2) · Questena