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Which describes spread spectrum frequency hopping?

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  1. The receiver asks the transmitter to change frequency
  2. Rapidly changing frequency in a pseudorandom sequence
  3. A bit stream shifts the carrier phase pseudorandomly

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References

  1. NCVEC 2024-2028 Amateur Extra Question Pool, 4th Errata (Feb 4, 2026) ncvec.org/downloads/2024-2028%20Extra%20Class%20Question%20Pool%20and%20Syllabus%20Public%20Release%20with%204th%20Errata%20Feb%204%202026.pdf Checked 2026-10-11.

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