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Question 307

Which type of modulation is commonly used for VHF and UHF voice repeaters?

  1. AM
  2. SSB
  3. PSK
  4. FM or PMCorrect answer

Explanation

VHF and UHF voice repeaters use frequency or phase modulation because FM's constant amplitude and capture effect give quiet, consistent audio from strong local signals, which is what repeater coverage provides. AM and SSB are not used for repeater voice channels.

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Question 307: Which type of modulation is commonly used for VHF and UHF… · FCC Technician Class (Element 2) · Questena