Amateur Extra Class: 2020–2024
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E2B10:

What aspect of an analog slow-scan television signal encodes the brightness of the picture?

  1. Tone frequency
  2. Tone amplitude
  3. Sync amplitude
  4. Sync frequency
E2B01 E2B02 E2B03 E2B04 E2B05 E2B06 E2B07 E2B08 E2B09 E2B10 E2B11 E2B12