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Confidence: Medium · Source: FCC ULS · As of 2026-09-12

KC5O callsign genealogy

Currently held by Brooks, Gary N

The FCC publishes a previous_call_sign on every amateur license — a self-link to the licensee's prior callsign. Following those links produces the chain below.

Previous callsigns

Older callsigns held by KC5O's current licensee, walking backwards.

  1. AA5RScancelled· E
    Schrienk, Robert JARgranted 2025-08-05cancelled 2026-06-05
  2. W5RJScancelled· E
    Schrienk, Robert JARgranted 2025-05-02cancelled 2025-08-05
  3. KJ5KXCcancelled· T
    Schrienk, Robert JARgranted 2025-04-12cancelled 2025-05-02

Successor callsigns

Callsigns held now by people who previously held KC5O.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KC5O, oldest first.

  • Brooks, Gary N NM
    2014-05-08 → cancelled 2026-05-19
  • Schrienk, Robert J AR
    2026-06-05 active
← Back to KC5O License history →