General Class: 2019–2023
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G3C05:

Why is long-distance communication on the 40-meter, 60-meter, 80-meter, and 160-meter bands more difficult during the day?

  1. The F layer absorbs signals at these frequencies during daylight hours
  2. The F layer is unstable during daylight hours
  3. The D layer absorbs signals at these frequencies during daylight hours
  4. The E layer is unstable during daylight hours
G3C01 G3C02 G3C03 G3C04 G3C05 G3C06 G3C07 G3C08 G3C09 G3C10 G3C11