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

KB4MD callsign genealogy

Currently held by FULTON, JOHN 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 KB4MD's current licensee, walking backwards.

  1. W7WZactive· E
    FULTON, JOHN DSCgranted 2022-12-28
  2. KB4DXcancelled
    FORT MILL CONTEST CLUBSCgranted 2024-02-21cancelled 2025-12-23
  3. KQ4ODZcancelled
    FORT MILL CONTEST CLUBSCgranted 2024-01-27cancelled 2024-02-21

Successor callsigns

Callsigns held now by people who previously held KB4MD.

  1. KB4DXcancelled· E
    FULTON, JOHN DSCgranted 2021-12-04cancelled 2022-12-28

All historical holders

Every license row we've seen with the callsign KB4MD, oldest first.

  • TOMLINSON, BILLY E FL
    2003-01-16 → cancelled 2015-02-03
  • FULTON, JOHN D SC
    2021-10-05 → cancelled 2021-12-04
← Back to KB4MD License history →