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

KO4M callsign genealogy

Currently held by DOMINGO, EDWARD 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 KO4M's current licensee, walking backwards.

  1. KZ4OYcancelled· E
    KOPECKY, MATTHEWKYgranted 2024-07-30cancelled 2026-02-27
  2. KM4ATcancelled· E
    KOPECKY, MATTHEWKYgranted 2024-07-30cancelled 2024-12-24
  3. KZ4BUcancelled· E
    KOPECKY, MATTHEWKYgranted 2023-10-20cancelled 2024-07-30
  4. KQ4LXWcancelled· E
    KOPECKY, MATTHEWKYgranted 2023-10-20cancelled 2023-11-06

Successor callsigns

Callsigns held now by people who previously held KO4M.

No current licensee on record previously held this callsign.

All historical holders

Every license row we've seen with the callsign KO4M, oldest first.

  • DOMINGO, EDWARD A OH
    2015-10-26 → cancelled 2024-02-06
  • KOPECKY, MATTHEW KY
    2026-02-27 active
← Back to KO4M License history →