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

K0IH callsign genealogy

Currently held by EDWARDS, MARK 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 K0IH's current licensee, walking backwards.

  1. AB9YMcancelled· E
    ROBERTSON, BRIAN RMOgranted 2021-10-12cancelled 2022-12-02
  2. KA9KKPcancelled· E
    ROBERTSON, BRIAN RILgranted 2003-05-06cancelled 2011-02-01

Successor callsigns

Callsigns held now by people who previously held K0IH.

  1. W5ZMactive· E
    Fortin, Pascal RNCgranted 2020-11-10
  2. W0QLactive· E
    EDWARDS, MARK WCOgranted 2019-10-04

All historical holders

Every license row we've seen with the callsign K0IH, oldest first.

  • EDWARDS, MARK W CO
    1999-10-19 → cancelled 1999-11-27
  • HAUNER, JOHN P NE
    2012-01-10 → cancelled 2018-05-20
  • Fortin, Pascal R TX
    2020-06-30 → cancelled 2020-11-10
  • Robertson, Brian R MO
    2022-12-02 active
← Back to K0IH License history →