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

KO0U callsign genealogy

Currently held by HARRISON, STEVEN M

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 KO0U's current licensee, walking backwards.

  1. KD0YCAcancelled· E
    Lindeman, Michael KKSgranted 2013-11-06cancelled 2014-03-28

Successor callsigns

Callsigns held now by people who previously held KO0U.

  1. K0XPactive· E
    HARRISON, STEVEN MCAgranted 2019-12-10
  2. KC0MOcancelled
    KANSAS CITY CONTEST CLUBKSgranted 2019-04-05cancelled 2019-04-30

All historical holders

Every license row we've seen with the callsign KO0U, oldest first.

  • SOCIETY OF MIDWEST CONTESTERS WEST MO
    2001-07-27 → cancelled 2008-08-15
  • Lindeman, Michael K TX
    2025-11-25 active
  • HARRISON, STEVEN M
    — → cancelled 1999-03-03
← Back to KO0U License history →