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

KO0M callsign genealogy

Currently held by GUZOWSKY, ERICK 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 KO0M's current licensee, walking backwards.

  1. KG5AEMcancelled· E
    GUZOWSKY, ERICK MTXgranted 2014-02-07cancelled 2016-02-26

Successor callsigns

Callsigns held now by people who previously held KO0M.

  1. KO0Nactive· E
    Griffin Jr, Melvin EOHgranted 2024-03-07
  2. K0FHactive· E
    HAWLEY, FREDERICK GCOgranted 2016-09-20

All historical holders

Every license row we've seen with the callsign KO0M, oldest first.

  • Griffin Jr, Melvin E OH
    2007-02-09 → cancelled 2014-02-04
  • GUZOWSKY, ERICK M TX
    2025-12-04 active
← Back to KO0M License history →