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Question 313

What is the approximate bandwidth of AM fast-scan TV transmissions?

  1. More than 10 MHz
  2. About 6 MHzCorrect answer
  3. About 3 MHz
  4. About 1 MHz

Explanation

Amateur AM fast-scan TV uses the same analog NTSC signal format as former broadcast television, whose channel allotment is 6 MHz wide, carrying the video sidebands plus the sound subcarrier. That is why fast-scan TV is confined to the UHF and higher bands, where 6 MHz of spectrum is available.

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Question 313: What is the approximate bandwidth of AM fast-scan TV… · FCC Technician Class (Element 2) · Questena