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

AC0H callsign genealogy

Currently held by KOELMAN, JOHN W

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 AC0H's current licensee, walking backwards.

  1. N1ASCcancelled· E
    CARBONE, ANTHONY SCTgranted 2023-03-17cancelled 2026-08-18
  2. N1PLOcancelled· E
    CARBONE, ANTHONY SCTgranted 2015-02-27cancelled 2023-03-17

Successor callsigns

Callsigns held now by people who previously held AC0H.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign AC0H, oldest first.

  • KOELMAN, JOHN W IA
    1991-01-22 → cancelled 2003-01-23
  • STOVER, ROBERT K IA
    2014-05-20 → cancelled 2026-08-01
  • CARBONE, ANTHONY S CT
    2026-08-18 active
← Back to AC0H License history →