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Frage 197

How close to the lower edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

  1. At least 3 kHz above the edge of the segmentRichtige Antwort
  2. At least 3 kHz below the edge of the segment
  3. At least 1 kHz below the edge of the segment
  4. At least 1 kHz above the edge of the segment

Erklärung

With LSB the occupied spectrum lies entirely below the displayed carrier frequency, so to keep a 3 kHz wide signal inside the segment the displayed frequency must sit at least 3 kHz above the lower edge. Setting it at or below the edge would put the sideband outside the segment even though the display reads inside it.

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Frage 197: How close to the lower edge of a band’s phone segment… · FCC General Class (Element 3) · Questena