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What effect may let radio signals travel beyond obstructions between two stations?

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  1. Knife-edge diffraction
  2. Faraday rotation
  3. Doppler shift

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References

  1. HamStudy 2026 Technician pool, T3C05 hamstudy.org/browse/E2_2026/T3C Checked 2026-10-09.

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