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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K0BUM callsign genealogy

Currently held by ROSSEL, BRYAN D

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 K0BUM's current licensee, walking backwards.

  1. N3XYZcancelled· T
    Witt, Casey JCOgranted 2025-12-09cancelled 2026-05-27
  2. W0URCcancelled· T
    Witt, Casey JCOgranted 2025-09-20cancelled 2025-12-09
  3. K8CJWcancelled· T
    Witt, Casey JSDgranted 2025-05-31cancelled 2025-09-20
  4. W8ITTcancelled· T
    Witt, Casey JNEgranted 2024-07-09cancelled 2025-05-31
  5. K0PTAcancelled· T
    Witt, Casey JCOgranted 2023-12-02cancelled 2024-07-09
  6. KF0NNLcancelled· T
    Coomes, Casey LCOgranted 2023-02-17cancelled 2023-12-02
  7. N8CLCcancelled· T
    Coomes, Casey LCOgranted 2023-02-17cancelled 2023-08-22
  8. KE0WIBcancelled· T
    Coomes, Casey LCOgranted 2022-03-08cancelled 2023-02-17
  9. KO0MEScancelled· T
    Coomes, Casey LCOgranted 2022-01-28cancelled 2022-03-08

Successor callsigns

Callsigns held now by people who previously held K0BUM.

  1. K0WIBcancelled· T
    Witt, Casey JCOgranted 2026-06-16cancelled 2026-07-17

All historical holders

Every license row we've seen with the callsign K0BUM, oldest first.

  • ROSSEL, BRYAN D CO
    2013-07-30 → cancelled 2025-07-31
  • Witt, Casey J CO
    2026-05-27 → cancelled 2026-06-16
← Back to K0BUM License history →