SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/ham-secondary-band-duty

What must U.S. amateurs do in a secondary band segment?

They must avoid interfering with non-amateur stations there.

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  1. Give foreign amateurs priority
  2. Ban international contacts
  3. Avoid interfering with non-amateur stations ✔

Why: A secondary allocation can be shared with stations that have primary status. U.S. amateurs must avoid causing interference to non-amateur stations in those segments.

Huh, didn't know that: Secondary users also cannot claim protection from interference caused by primary stations.

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Why was the secondary station polite? It always let the primary signal go first.
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References

Answer: Avoid interfering with non-amateur stations. A secondary allocation can be shared with stations that have primary status. U.S. amateurs must avoid causing interference to non-amateur stations in those segments.

  1. 2026-2030 Technician Class Question Pool ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    must avoid interfering with them
    Checked 2026-10-09.

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