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Frage 347

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

  1. Dot and dash
  2. On and off
  3. High and low
  4. Mark and spaceRichtige Antwort

Erklärung

The two FSK signaling frequencies are called mark and space, terms inherited from landline telegraphy. Dot and dash belong to Morse code and on and off to on-off keying.

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Frage 347: How are the two separate frequencies of a Frequency Shift… · FCC General Class (Element 3) · Questena