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

KC4H callsign genealogy

Currently held by Michalek, Donald A

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 KC4H's current licensee, walking backwards.

  1. AI4MEactive· E
    Johnson, David CCAgranted 2019-04-02
  2. AI6DHcancelled· E
    Johnson, David CCAgranted 2014-08-14cancelled 2019-04-02
  3. KK6OMBcancelled· E
    Johnson, David CCAgranted 2014-08-14cancelled 2014-08-21

Successor callsigns

Callsigns held now by people who previously held KC4H.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KC4H, oldest first.

  • HARDISON, MARY E NC
    1997-03-12 → cancelled 2009-03-13
  • Michalek, Donald A VA
    2019-02-01 active
← Back to KC4H License history →