Technician Class: 2018–2022
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T3C01:

Why are direct (not via a repeater) UHF signals rarely heard from stations outside your local coverage area?

  1. They are too weak to go very far
  2. FCC regulations prohibit them from going more than 50 miles
  3. UHF signals are usually not reflected by the ionosphere
  4. UHF signals are absorbed by the ionospheric D layer
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